Veröffentlichungen

High speed single point THz phase measurement based on dual channel lock-in technique

2018 - Alexandra Gerling, Martin R. Hofmann , Carsten Brenner

International Workshop on Mobile Terahertz Systems (IWMTS), Velen, Germany, July 2-4, 2018

Terahertz Time-Domain Spectroscopy by Asynchronous Sampling with Modelocked Semiconductor Lasers

2018 - Nils Surkamp, Benjamin Döpke, Yinghui Hu, Carsten Brenner, A. Klehr, A. Knigge, G. Tränkle, Martin R. Hofmann

International Workshop on Mobile Terahertz Systems (IWMTS), Velen, Germany, July 2-4, 2018

Near Infrared Diode Laser THz Systems

2018 - Carsten Brenner, Yinghui Hu, Jared Ombiro Gwaro, Nils Surkamp, Benjamin Döpke, Martin R. Hofmann , B. Kani, A. Stöhr, B. Sumpf, A. Klehr, J. Fricke

Adv. Radio Sci., Volume 16, 2018 (accepted)

Classification of brain tissue with optical coherence tomography by employing texture analysis

2018 - Marcel Lenz, Robin Krug, Christopher Dillmann, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

SPIE 10679-6 SPIE Photonics Europe , Strasbourg, France (2018)

Classification of brain tissue with optical coherence tomography by employing texture analysis

2018 - Marcel Lenz, Robin Krug, Christopher Dillmann, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

Proc. SPIE 10679, Optics, Photonics, and Digital Technologies for Imaging Applications V, 106790A (2018)

Asynchronous sampling terahertz time-domain spectroscopy using semiconductor lasers

2018 - Benjamin Döpke, Nils Surkamp, Yinghui Hu, Carsten Brenner, A. Klehr, A. Knigge, G. Tränkle, Martin R. Hofmann

Electronics Letters Volume 54, Issue 10; DOI: 10.1049/el.2018.0521 [Link]

Compact continuous wave THz source based on monolithic two-color laser diode

2018 - Jared Ombiro Gwaro, Carsten Brenner, Bernd Sumpf, Andreas Klehr, Jörg Fricke, Martin R. Hofmann

Proc. SPIE 10684, Nonlinear Optics and its Applications 2018, 106841Y (14 May 2018); doi:10.1117/12.2306866 [doi]

Compact continuous wave THz source based on monolithic two-color laser diode

2018 - Jared Ombiro Gwaro, Carsten Brenner, Bernd Sumpf, Andreas Klehr, Jörg Fricke, Martin R. Hofmann

SPIE Photonics Europe, Strasbourg, France (2018)

Mode-locked diode laser with resonant ring amplifier

2018 - Mohammad Ali Alloush, Rouven H. Pilny, Carsten Brenner, Thomas Prziwarka, Andreas Klehr, Andrea Knigge, Günther Tränkle, Martin R. Hofmann

Proc. SPIE Photonics Europe 10682, Semiconductor Lasers and Laser Dynamics VIII; 106820N (2018); doi: 10.1117/12.2307220 [doi]

Mo­de-lo­cked diode laser with re­so­nant ring am­pli­fier

2018 - Mohammad Ali Alloush, Rouven H. Pilny, Carsten Brenner, Thomas Prziwarka, Andreas Klehr, Andrea Knigge, Günther Tränkle, Martin R. Hofmann

SPIE 10682 SPIE Photonics Europe , Strasbourg, France (2018)

Discrete similariton and dissipative soliton modelocking for energy scaling ultrafast thin-disk laser oscillators

2018 - F. Ö. Ilday, D. K. Kesim, Martin Saraceno, Clara J. Saraceno

(Invited Paper) IEEE Journal of Seleted Topics in Quantum Electronics - Online May 2018 [DOI]

Semiconductor Lasers

2018 - Stephan W. Koch, Martin R. Hofmann

In: Guenther, R. and Steel, D. (eds.), Encyclopedia of Modern Optics 2nd edition, vol. 2, pp. 462–468. Oxford: Elsevier. (2018)

Resonant pulse amplification based on mode-locked semiconductor lasers

2018 - Mohammad Ali Alloush, Rouven H. Pilny, Carsten Brenner, A. Klehr, A. Knigge, G. Tränkle, Martin R. Hofmann

Semiconductor Integrated Optoelectronics (SIOE) conference, Cardiff (2018)

Brain tissue analysis using texture features based on optical coherence tomography images

2018 - Marcel Lenz, Robin Krug, Christopher Dillmann, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXII. Vol. 10483. International Society for Optics and Photonics, 2018.

Automated differentiation between meningioma and healthy brain tissue based on optical coherence tomography ex vivo images using texture features

2018 - Marcel Lenz, Robin Krug, Christopher Dillmann, Ralf Stroop, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

J. of Biomedical Optics, 23(7), 071205 (2018). doi:10.1117/1.JBO.23.7.071205. [Link]

Brain tissue analysis using texture features based on optical coherence tomography images

2018 - Marcel Lenz, Robin Krug, Christopher Dillmann, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

SPIE 10483-120, SPIE Photonics West, San Francsisco, California, USA(2018)

Digital holography for the investigation of buried structures with a common-path reflection microscope

2018 - Lena Göring, Markus Finkeldey, Martin R. Hofmann , Nils C. Gerhardt

Proc. SPIE 10558, Practical Holography XXXII: Displays, Materials, and Applications, 1055808 (19 February 2018); doi: 10.1117/12.2289524

Digital holography for the investigation of buried structures with a common-path reflection microscope

2018 - Lena Göring, Markus Finkeldey, Martin R. Hofmann , Nils C. Gerhardt

10558-8, SPIE Photonics West, San Francisco, California, USA (2018)

Passive, active, and hybrid mode-locking in a self-optimized ultrafast diode laser

2018 - Mohammad Ali Alloush, Rouven H. Pilny, Carsten Brenner, Andreas Klehr, Andrea Knigge, Günther Tränkle, Martin R. Hofmann

SPIE Pho­to­nics West (OPTO), San Fran­cis­co (2018)

Passive, active, and hybrid mode-locking in a self-optimized ultrafast diode laser

2018 - Mohammad Ali Alloush, Rouven H. Pilny, Carsten Brenner, Andreas Klehr, Andrea Knigge, Günther Tränkle, Martin R. Hofmann

Proc. SPIE 10553; DOI: 10.1117/12.2290086

Optical metrology for the investigation of buried technical structures

2018 - Lena Göring, Markus Finkeldey, Falk Schellenberg, Carsten Brenner, Martin R. Hofmann , Nils C. Gerhardt

tm-Technisches Messen, 2018, 85(2), 104-110.

Demonstrating ultrafast polarization dynamics in spin-VCSELs

2018 - Markus Lindemann, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann

10552-8, Photonics West Conference, San Francisco (2018)

Demonstrating ultrafast polarization dynamics in spin-VCSELs

2018 - Markus Lindemann, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 10552, 1055209 (2018)

Electrical birefringence tuning of VCSELs

2018 - Tobias Pusch, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Rainer Michalzik

10552-9, Photonics West Conference, San Francisco (2018)

Electrical birefringence tuning of VCSELs

2018 - Tobias Pusch, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Rainer Michalzik

Proc. SPIE 10552, 105520A (2018)

A direct-view customer-oriented digital holographic camera

2018 - Vira R. Besaga, Nils C. Gerhardt, Peter P. Maksimyak, Martin R. Hofmann

Proc. SPIE 10612, Thirteenth International Conference on Correlation Optics, 106120I. (January 18, 2018) doi: 10.1117/12.2304923

Nondestructive evaluation of protective coatings for the conservation of industrial monuments

2017 - Hubert Welp, Marcel Lenz, Cristian Mazzon, Christopher Dillmann, Nils C. Gerhardt, Michael Prange, Martin R. Hofmann

Optics for Arts, Architecture and Archaeology VI. Vol. 10331. International Society for Optics and Photonics, 2017.

Ultrafast spin-VCSELs

2017 - Nils C. Gerhardt, Markus Lindemann, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

I5, European Semiconductor Laser Workshop 2017, DTU, Copenhagen (2017) -Invited Talk-

Self-optimizing passively, actively and hybridly mode-locked diode lasers

2017 - Rouven H. Pilny, Benjamin Döpke, Mohammad Ali Alloush, Carsten Brenner, A. Klehr, A. Knigge, G. Tränkle, Martin R. Hofmann

CB-P.2, CLEO/Europe 2017, Munich (2017)

Ultrafast Diode Laser with Self-Adapting Pulse-Shaping in Passive, Active and Hybrid Mode-Locking Operation

2017 - Rouven H. Pilny, Benjamin Döpke, Mohammad Ali Alloush, Carsten Brenner, Martin R. Hofmann

JTh2A.128, Optics + Photonics Conference, San Diego (2017)

Birefringence tuning in vertical-cavity surface-emitting lasers based on asymmetric heating

2017 - T. Pusch, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , R. Michalzik

VCSEL Day (2017), Cardiff, Wales, United Kingdom

THz sources and systems based on near infrared diode lasers

2017 - Yinghui Hu, Jared Ombiro Gwaro, Nils Surkamp, Benjamin Döpke, Carsten Brenner, B. Khani, A. Stöhr, B. Sumpf, A. Klehr, J. Fricke, Martin R. Hofmann

Kleinheubacher Tagung, Miltenberg, Germany, September 2017 (invited)

High-frequency polarization dynamics in spin-lasers: pushing the limits

2017 - Nils C. Gerhardt, Markus Lindemann, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

10357-85, Optics + Photonics Conference, San Diego (2017) -Invited Talk-

High-frequency polarization dynamics in spin-lasers: pushing the limits

2017 - Nils C. Gerhardt, Markus Lindemann, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

Proc. SPIE 10357, 103572F (2017)

A direct-view customer-oriented digital holographic camera

2017 - Vira R. Besaga, Nils C. Gerhardt, Peter P. Maksimyak, Martin R. Hofmann

The Thirteenth International Conference on Correlation Optics, Chernivtsi, Ukraine (September 13, 2017). — SPIE First Place Student Presentation Award —

Ultrafast polarization dynamics with resonance frequencies beyond 100 GHz in birefringent spin-lasers

2017 - Nils C. Gerhardt, Markus Lindemann, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

Gordon Research Conference – Spin Dynamics in Nanostructures, Les Diablerets, Switzerland (2017)

Common-path holographic objective for conventional photographic camera

2017 - Vira R. Besaga, Nils C. Gerhardt, Peter P. Maksimyak, Martin R. Hofmann

Proc. SPIE 10376, Novel Optical Systems Design and Optimization XX, 103760W. (August 24, 2017); doi: 10.1117/12.2273890 [doi]

Layer Sectioning in Buried Structures with Common-Path Digital Holography

2017 - Markus Finkeldey, Lena Göring, Carsten Brenner, Nils C. Gerhardt, Martin R. Hofmann

[Th1F-04], Thu. Aug 24, 2017, ICO-24, Tokyo, Japan, (OSA/SPIE Student Paper Award)

Common-path holographic objective for conventional photographic camera

2017 - Vira R. Besaga, Nils C. Gerhardt, Peter P. Maksimyak, Martin R. Hofmann

10376-32, SPIE Optics + Photonics, San Diego, California, USA (August 9, 2017)

Depth-filtering in common-path digital holographic microscopy

2017 - Markus Finkeldey, Lena Göring, Carsten Brenner, Martin R. Hofmann , Nils C. Gerhardt

OPTICS EXPRESS Vol. 25, Issue 16, pp. 19398-19407; DOI:10.1364/OE.25.019398 [doi] [Issue 16]

Nondestructive evaluation of protective coatings for the conservation of industrial monuments.

2017 - Hubert Welp, Marcel Lenz, Cristian Mazzon, Christopher Dillmann, Nils C. Gerhardt, Michael Prange, Martin R. Hofmann

SPIE Optical Metrology. International Society for Optics and Photonics, 2017.

Thermally Induced Birefringence Tuning of 37 GHz in VCSELs

2017 - Tobias Pusch, Eros La Tona, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Rainer Michalzik

Conference on Lasers and Electro-Optics Europe, CLEO/Europe 2017, paper CB-3.1., Munich, Germany, 2017

Tunable Polarization Oscillations in Resonantly Pumped Spin-VCSELs

2017 - Markus Lindemann, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann

Conference on Lasers and Electro-Optics Europe, CLEO/Europe 2017, paper CB-3.2., Munich, Germany, 2017

Optical Imaging

2017 - F. Alves, J. Bode, P. Cimalla, I. Hilger, Martin R. Hofmann , Volker Jaedicke, E. Koch, K. Licha, T. Rademakers, D. Razansky, M.A.M.J. van Zandvoort

In: Kiessling F., Pichler B., Hauff P. (eds) Small Animal Imaging. Springer, Cham (2017)

Brain tissue differentiation based on optical coherence tomography images using texture features

2017 - Marcel Lenz, Robin Krug, Christopher Dillmann, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

ECBO Munich (2017)

Compact CW THz Spectroscopy System and its Application in Water Absorption Measurements

2017 - Yinghui Hu, Besher Khani, Carsten Brenner, Vitaly Rymanov, Andreas Stöhr, Martin R. Hofmann

Conference on Lasers and Electro-Optics, CLEO/EUROPE, Munich, Germany, June 25-29 (2017)

Compact Optoelectronic Continuous Wave Terahertz Spectroscopy System (230-400 GHz) for Paper Sorting and Characterization

2017 - Besher Khani, Yinghui Hu, Vitaly Rymanov, Carsten Brenner, Martin R. Hofmann , Andreas Stöhr

Conference on Lasers and Electro-Optics, CLEO/EUROPE, Munich, Germany, June 25-29 (2017)

Digital holographic microscopy of buried specimen using a common-path reflective setup

2017 - Markus Finkeldey, Lena Göring, Carsten Brenner, Nils C. Gerhardt, Martin R. Hofmann

118. DGaO Jahrestagung, Dresden, Germany (2017)

A customer-oriented digital holographic camera concept

2017 - Vira R. Besaga, Nils C. Gerhardt, Peter P. Maksimyak, Martin R. Hofmann

The Nanophotonics and Metamaterials International Doctoral Summer School, ITMO University, St. Petersburg, Russian Federation (May 15, 2017). — Best Poster Award, First place —

Diode laser based terahertz asynchronous optical sampling spectroscopy

2017 - Nils Surkamp, Benjamin Döpke, A. Klehr, A. Knigge, G. Tränkle, Martin R. Hofmann

Semiconductor Integrated Optoelectronics (SIOE) Conference in Cardiff University, Cardiff, Wales, UK, 18-20th April (2017)

Tunable Two-Colour Semiconductor Laser for a Compact CW THz Spectroscopy System

2017 - Yinghui Hu, Besher Khani, Carsten Brenner, Andreas Stöhr, Martin R. Hofmann

Semiconductor Integrated Optoelectronics (SIOE) Conference in Cardiff University, Cardiff, Wales, UK, 18-20th April (2017)

Generation of Terahertz radiation with monolithically integrated dual mode Distributed Bragg Reflector semiconductor diode laser

2017 - Jared Ombiro Gwaro, Carsten Brenner, Bernd Sumpf, Andreas Klehr, Jörg Fricke, Martin R. Hofmann

German Terahertz Conference, March 29-31,(2017).

Femtosecond semiconductor laser system with resonator-internal dispersion adaptation

2017 - Rouven H. Pilny, Benjamin Döpke, Jan C. Balzer, Carsten Brenner, Andreas Klehr, Andrea Knigge, Gün­ther Tränkle, Martin R. Hofmann

Optics Letters, Volume 42, Issue 8, pp. 1524-1527 (2017), doi: 10.1364/OL.42.001524

Investigations on polarization oscillation amplitudes in spin-VCSELs

2017 - Markus Lindemann, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann

10122-23, Photonics West Conference, San Francisco (2017)

Investigations on polarization oscillation amplitudes in spin-VCSELs

2017 - Markus Lindemann, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 10122, 101220O (2017)

Monolithic vertical-cavity surface-emitting laser with thermally tunable birefringence

2017 - Tobias Pusch, Eros La Tona, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Rainer Michalzik

Appl. Phys. Lett. 110, 151106 (2017); doi:10.1063/1.4980025 [doi]

Spectral Domain Optical Coherence Tomography for Non-Destructive Testing of Protection Coatings on Metal Substrates

2017 - Marcel Lenz, Cristian Mazzon, Christopher Dillmann, Nils C. Gerhardt, Hubert Welp, Michael Prange, Martin R. Hofmann

Appl. Sci. 2017, 7, 364.

A Mode-Locked Semiconductor Laser Based Asynchronous Sampling Terahertz Spectroscopy System

2017 - Benjamin Döpke, Yinghui Hu, Nils Surkamp, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

German Terahertz Conference, Bochum, Germany, March 29-31 (2017)

Dynamics of the photoacoustic response of single-element PZT transducers to pulse burst excitation

2017 - Maxim N. Cher­ka­shin, Carsten Brenner, Widodo Dwi Putro, Benjamin Döpke, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 10064, Photons Plus Ultrasound: Imaging and Sensing 2017 (March 3, 2017); doi: 10.1117/12.2253051 [Link]

Linking transducer transfer function with multi-pulse excitation photoacoustic response

2017 - Maxim N. Cher­ka­shin, Carsten Brenner, Widodo Dwi Putro, Benjamin Döpke, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 10139, Medical Imaging 2017: Ultrasonic Imaging and Tomography (March 13, 2017); doi: 10.1117/12.2254577 [Link]

Backside imaging of a microcontroller with common-path digital holography

2017 - Markus Finkeldey, Lena Göring, Falk Schellenberg, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE. 10127, Practical Holography XXXI: Materials and Applications, 1012704. (February 15, 2017) doi: 10.1117/12.2250903

Backside imaging of a microcontroller with common-path digital holography

2017 - Markus Finkeldey, Lena Göring, Falk Schellenberg, Nils C. Gerhardt, Martin R. Hofmann

10127-3, SPIE Photonics West, San Francisco, California, USA (2017)

Lensless digital holographic microscope using in-line configuration and laser diode illumination

2017 - Lena Göring, Markus Finkeldey, Adamou Adinda-Ougba, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE. 10127, Practical Holography XXXI: Materials and Applications, 101270V. (February 15, 2017) doi: 10.1117/12.2250927

Multimodal backside imaging of a microcontroller using confocal laser scanning and optical-beam-induced current imaging

2017 - Markus Finkeldey, Lena Göring, Falk Schellenberg, Carsten Brenner, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE. 10110, Photonic Instrumentation Engineering IV, 101101F. (February 20, 2017) doi: 10.1117/12.2250912

Spectroscopic optical coherence tomography for ex vivo brain tumor analysis

2017 - Marcel Lenz, Robin Krug, Christopher Dillmann, Alexandra Gerling, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

Proc. SPIE 10054, Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XV, 100540L (February 14, 2017); doi:10.1117/12.2252141.

Spectroscopic optical coherence tomography for ex vivo brain tumor analysis

2017 - Marcel Lenz, Robin Krug, Christopher Dillmann, Alexandra Gerling, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

SPIE 10054-19, SPIE Photonics West, San Francisco, California, USA (2017)

Applications for Optical Components in THz Systems

2017 - Andreas Stöhr, Vitaly Rymanov, Besher Khani, Yinghui Hu, Martin R. Hofmann

Optical Fiber Communication Conference (OFC), Los Angeles, California, USA (2017) -invited paper-

Two-Color Laser for THz Generation with High Speed Photodiodes

2017 - Yinghui Hu, Besher Khani, Carsten Brenner, Vitaly Rymanov, Andreas Stöhr, Martin R. Hofmann

German Terahertz Conference, Bochum, Germany (2017)

Terahertz frequency generation with monolithically integrated dual wavelength Distributed Bragg Reflector semiconductor laser diode

2017 - Jared Ombiro Gwaro, Carsten Brenner, Bernd Sumpf, Andreas Klehr, Jörg Fricke, Martin R. Hofmann

IET optoelectronics special issue, DOI: 10.1049/iet-opt.2016.0054 , Print ISSN 1751-8768, Online ISSN 1751-8776

Local binary patterns for differentiation of brain tissue types inoptical coherence tomography images

2016 - Marcel Lenz, Robin Krug, Christopher Dillmann, Nils C. Gerhardt, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

BMT Basel (2016)

Frequency tuning of polarization oscillations in spin-lasers

2016 - Markus Lindemann, Nils C. Gerhardt, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

9931-153, Optics + Photonics Conference, San Diego (2016)

Frequency tuning of polarization oscillations in spin-lasers

2016 - Markus Lindemann, Nils C. Gerhardt, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

Proc. SPIE 9931, 993149

High-frequency operation of spin vertical-cavity surface-emitting lasers: towards 100 GHz

2016 - Nils C. Gerhardt, Markus Lindemann, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

9931-11, Optics + Photonics Conference, San Diego (2016) -Invited Talk-

High-frequency operation of spin vertical-cavity surface-emitting lasers: towards 100 GHz

2016 - Nils C. Gerhardt, Markus Lindemann, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

Proc. SPIE 9931, 99310C (2016)

Interaction of phase and amplitude shaping in an external cavity semiconductor laser

2016 - Rouven H. Pilny, Benjamin Döpke, Jan C. Balzer, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

SPIE Photonics West (OPTO), San Francisco (2016)

Interaction of phase and amplitude shaping in an external cavity semiconductor laser

2016 - Rouven H. Pilny, Benjamin Döpke, Jan C. Balzer, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

Proc. SPIE 9767; DOI: 10.1117/12.2212906

Timing jitter performance of mode-locked external cavity multi-quantum-well semiconductor lasers

2016 - Benjamin Döpke, Rouven H. Pilny, Heiko Horstkemper, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

SPIE OPTO (Photonics West 2016 San Francisco)

Timing jitter performance of mode-locked external cavity multi-quantum-well semiconductor lasers

2016 - Benjamin Döpke, Rouven H. Pilny, Heiko Horstkemper, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

Proc. SPIE 9767; DOI: 10.1117/12.2213042

Impact of resonator-internal pulse shaping in mode-locked diode lasers

2016 - Rouven H. Pilny, Benjamin Döpke, Carsten Brenner, Thomas Prziwarka, Andreas Klehr, Hans Wenzel, Andrea Knigge, Jörg Hader, Martin R. Hofmann

Nonlinear Dynamics in Semiconductor Lasers, WIAS Berlin (2016)

Common-path digital holography microscopy of buried semiconductor specimen

2016 - Markus Finkeldey, Lena Göring, Nils C. Gerhardt, Martin R. Hofmann

Imaging and Applied Optics 2016, OSA Technical Digest (online), paper JW4A.40 [Link]

A measurement system for electric car charging stations utilising a FPGA board for flexibility in configuration

2016 - Ivan Stoychev, Jan-Christoph Tebbe, Jürgen Oehm

2016 IEEE International Symposium on Circuits and Systems (ISCAS), Montréal, QC, Canada, 2016, pp. 630-633

Birefringence tuning of VCSELs

2016 - Tobias Pusch, Marwan Bou Sanayeh, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Rainer Michalzik

SPIE Photonics Europe, Brussels, Belgium (2016)

Birefringence tuning of VCSELs

2016 - Tobias Pusch, Marwan Bou Sanayeh, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Rainer Michalzik

Proc. SPIE 9892, 989222 (2016); doi:10.1117/12.2228091

Birefringent vertical cavity surface-emitting lasers: toward high speed spin-lasers

2016 - Nils C. Gerhardt, Markus Lindemann, Tobias Pusch, Rainer Michalzik, Martin R. Hofmann

Proc. SPIE 9892, 989206 (2016); doi:10.1117/12.2229356

Frequency tuning of polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers

2016 - Markus Lindemann, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 9892, 989224 (April 28, 2016); doi:10.1117/12.2229358

Dynamics of double-pulse photoacoustic excitation

2016 - Maxim N. Cher­ka­shin, Carsten Brenner, Lena Göring, Benjamin Döpke, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 9708, Photons Plus Ultrasound: Imaging and Sensing 2016, 97084C (March 15, 2016); doi:10.1117/12.2213476 [Link]

Large Laser Spots and Fault Sensitivity Analysis

2016 - Falk Schellenberg, Markus Finkeldey, Nils C. Gerhardt, Martin R. Hofmann , Amir Moradi, Chris­tof Paar

IEEE International Symposium on Hardware Oriented Security and Trust, HOST 2016, McLean, VA, USA, May 3-5, 2016 (best student-pa­per award). [DOI] [pdf]

Terahertz frequency generation with monolithically integrated dual wavelength Distributed Bragg Reflector semiconductor laser diode

2016 - Jared Ombiro Gwaro, Carsten Brenner, Bernd Sumpf, Andreas Klehr, Jörg Fricke, Martin R. Hofmann

Semiconductor Integrated Optoelectronics (SIOE) conference in Cardiff University, UK 5-7th April (2016)

Ex vivo brain tumor analysis using spectroscopic optical coherence tomography

2016 - Marcel Lenz, Robin Krug, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

SPIE 9697-121, SPIE Photonics West, San Francisco, California, USA (2016)

Common-path depth-filtered digital holography for high resolution imaging of buried semiconductor structures

2016 - Markus Finkeldey, Falk Schellenberg, Nils C. Gerhardt, Chris­tof Paar, Martin R. Hofmann

9771-16, SPIE Photonics West, San Francisco, California, USA (2016)

Microscopic description of a spin laser

2016 - P.E. Faria Junior, G. Xu, J. Lee, Nils C. Gerhardt, G.M. Sipahi, I. Zutic

American Physical Society March Meeting, Vol. 61, No. 2 (2016)

Terahertz difference frequency generation by a monolithic integrated dual mode Distributed Bragg Reflector semiconductor diode laser

2016 - Jared Ombiro Gwaro, Carsten Brenner, Bernd Sumpf, Andreas Klehr, Jörg Fricke , Martin R. Hofmann

7th International Workshop on Terahertz Technology and Applications Workshop, Kaiserslautern 15-16th March, (2016)

Terahertz wave generation from dual wavelength monolithic integrated Distributed Bragg Reflector semiconductor laser diode

2016 - Jared Ombiro Gwaro, Carsten Brenner, Bernd Sumpf, Andreas Klehr, Jörg Fricke, Martin R. Hofmann

Germany microwave conference, GeMiC 2016 , March 14–16, 2016, Bochum, Germany

Ex vivo brain tumor analysis using spectroscopic optical coherence tomography

2016 - Marcel Lenz, Robin Krug, Hubert Welp, Kirsten Schmieder, Martin R. Hofmann

Proc. SPIE 9697, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XX, 96973D (March 8, 2016); doi: 10.1117/12.2214704 [DOI]

Common-path depth-filtered digital holography for high resolution imaging of buried semiconductor structures

2016 - Markus Finkeldey, Falk Schellenberg, Nils C. Gerhardt, Chris­tof Paar, Martin R. Hofmann

Proc. SPIE 9771, Practical Holography XXX: Materials and Applications, 97710G (7 March 2016); doi: 10.1117/12.2212454 [DOI]

Birefringent vertical-cavity surface-emitting lasers: toward high-speed spin-lasers

2016 - Nils C. Gerhardt, Markus Lindemann, T. Pusch, R. Michalzik, Martin R. Hofmann

9892-5, SPIE Photonics Europe, Brussels, Belgium (2016) – invited -

Frequency tuning of polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers

2016 - Markus Lindemann, T. Pusch, R. Michalzik, Nils C. Gerhardt, Martin R. Hofmann

9892-76, SPIE Photonics Europe, Brussels, Belgium (2016)

Frequency tuning of polarization oscillations: Toward high-speed spin-lasers

2016 - Markus Lindemann, T. Pusch, R. Michalzik, Nils C. Gerhardt, Martin R. Hofmann

Appl. Phys. Lett., 108, 042404 (2016)

Influence of birefringence splitting on ultrafast polarization oscillations in VCSELs

2016 - Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , T. Pusch, R. Michalzik

Proc. SPIE 9766, 97660L (2016), doi:10.1117/12.2212413

Influence of birefringence splitting on ultrafast polarization oscillations in VCSELs

2016 - Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , T. Pusch, R. Michalzik

9766-20, SPIE Photonics West, San Francisco, California, USA (2016)

Recognition of pharmaceuticals with compact Mini-Raman-spectrometer and automized pattern recognition algorithms

2016 - Hendrik Jähme, Giuseppe Di Florio, Valeria Conti Nibali, Cemal Esen, Andreas Ostendorf, Markus Grafen, Erich Henke, Jens Soetebier, Carsten Brenner, Martina Havenith-Newen, Martin R. Hofmann

Proc. SPIE 98992M doi:10.1117/12.2228070

Recognition of pharmaceuticals with Raman-spectrometer and automated pattern recognition algorithms

2016 - Hendrik Jähme, Giuseppe Di Florio, Valeria Conti Nibali, Cemal Esen, Andreas Ostendorf, Markus Grafen, Erich Henke, Jens Soetebier, Carsten Brenner, Martina Havenith-Newen, Martin R. Hofmann

SPIE Photonics Europe, Brussels, Belgium, 9899-98 (2016)

Intracavity phase and amplitude shaping of a passively mode-locked semiconductor laser

2015 - Rouven H. Pilny, Benjamin Döpke, Carsten Brenner, Martin R. Hofmann

Semiconductor and Integrated Optoelectronics, Cardiff (2015)

Spectral broadening of mode-locked semiconductor lasers by resonator-internal pulse shaping

2015 - Benjamin Döpke, Rouven H. Pilny, Carsten Brenner, Jan C. Balzer, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

CLEO Europe in München (2015)

Microscopic description of spin-lasers: from spin-dependent gain to high frequency operation

2015 - P.E. Faria Junior, G. Xu, J. Lee, Nils C. Gerhardt, G.M. Sipahi, I. Zutic

17th Brazilian Workshop on Semiconductor Physics, Uberlândia, Brazil (2015)

Towards high-frequency operation of spin-lasers

2015 - P.E. Faria Junior, G. Xu, J. Lee, Nils C. Gerhardt, G.M. Sipahi, I. Zutic

Phys. Rev. B, 92, 075311 (2015)

Towards high-frequency operation of spin-lasers

2015 - P.E. Faria Junior, G. Xu, J. Lee, Nils C. Gerhardt, G.M. Sipahi, I. Zutic

APS March Meeting, San Antonio, Texas, USA (2015)

Vertical-cavity surface-emitting lasers with birefringence splitting above 250 GHz

2015 - T. Pusch, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , R. Michalzik

Electron. Lett. 51, 1600 (2015)

An ex vivo investigation of different brain tumors using Optical Coherence Tomography

2015 - Marcel Lenz, Robin Krug, Kirsten Schmieder, Martin R. Hofmann

49th DGBMT Annual Conference Lübeck 2015

Compact low-cost lensless digital holographic microscope for topographic measurements of microstructures in reflection geometry

2015 - Adamou Adinda-Ougba, B. Kabir, Nektarios Koukourakis, F. Mitschker, Nils C. Gerhardt, Martin R. Hofmann

SPIE Optical Systems Design, Jena, Germany (2015)

Compact low-cost lensless digital holographic microscope for topographic measurements of microstructures in reflection geometry

2015 - Adamou Adinda-Ougba, B. Kabir, Nektarios Koukourakis, F. Mitschker, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 9628, Optical Systems Design 2015: Optical Fabrication, Testing, and Metrology V, 962818 (24 September 2015); doi: 10.1117/12.2191073 [Link]

Simple concept for a wide-field lensless digital holographic microscope using a laser diode

2015 - Adamou Adinda-Ougba, Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann

49th DGBMT annual conference, Lübeck 2015

Simple concept for a wide-field lensless digital holographic microscope using a laser diode

2015 - Adamou Adinda-Ougba, Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann

DE GRUYTER, Current Directions in Biomedical Engineering, Band 1, Heft 1, Seiten 261–264, ISSN (Online) 2364-5504, DOI: 10.1515/cdbme-2015-0065, September 2015 [Link]

Laser-diode-based photoacoustic setup to analyze Grüneisen relaxation-effect induced signal enhancement

2015 - Maxim N. Cher­ka­shin, Carsten Brenner, Lena Göring, Benjamin Döpke, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 9539, Opto-Acoustic Methods and Applications in Biophotonics II, 95390M (Munich, 2015); doi:10.1117/12.2183957 [Link]

Controlled switching and frequency tuning of polarization oscillations in vertical-cavity surface-emitting lasers

2015 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

Proc. SPIE 9551, Spintronics VIII, 95512Z (2015)

Controlled switching and frequency tuning of polarization oscillations in vertical-cavity surface-emitting lasers

2015 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

SPIE Optics + Photonics, San Diego, California, USA (2015)

Towards high frequency operation of polarization oscillations in spin vertical-cavity surface-emitting lasers

2015 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

Proc. SPIE 9551, Spintronics VIII, 95512O (2015) (Invited Paper)

Towards high frequency operation of polarization oscillations in spin vertical-cavity surface-emitting lasers

2015 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

SPIE Optics + Photonics, San Diego, California, USA (2015) –invited-

On the Complexity Reduction of Laser Fault Injection Campaigns using OBIC Measurements

2015 - Falk Schellenberg, Markus Finkeldey, Bastian Richter, Maximilian Schäpers, Nils C. Gerhardt, Martin R. Hofmann , Chris­tof Paar

Fault Diagnosis and Tolerance in Cryptography - FDTC 2015, Saint Malo, France, September 13, 2015. [DOI] [pdf]

Diode laser systems for applications in metrology and biomedical imaging

2015 - Martin R. Hofmann

Women in Optics - The Castle Meeting, Rauischholzhausen, Germany (August 2015)

Dreidimensionale Einzelschussholographie

2015 - Michael Breede, Martin R. Hofmann

DE 102006051868.3-51, erteilt am 6.8.2015

Optimization of a mode-locked diode laser by manipulation of intracavity dispersion and absorption with an evolutionary algorithm

2015 - Rouven H. Pilny, Benjamin Döpke, Carsten Brenner, Jan C. Balzer, Martin R. Hofmann

München, CLEO Europe, 2015

Optische Kohärenztomographie für biomedizinische Anwendungen

2015 - Marcel Lenz, Robin Krug, Ralf Stroop, Kirsten Schmieder, Martin R. Hofmann

IEEE Workshop 2015- Medizinische Messtechnik, Mülheim (2015)

Photoacoustic Imaging with Laser Diodes

2015 - Maxim N. Cher­ka­shin, Martin R. Hofmann

IEEE Workshop 2015- Medizinische Messtechnik, Mülheim (2015)

Spectral domain optical coherence tomography for ex vivo brain tumor analysis

2015 - Marcel Lenz, Robin Krug, Volker Jaedicke, Ralf Stroop, Kirsten Schmieder, Martin R. Hofmann

SPIE Op­ti­cal Me­tro­lo­gy, Mu­nich, Ger­ma­ny (2015)

Spectral domain optical coherence tomography for ex vivo brain tumor analysis

2015 - Marcel Lenz, Robin Krug , Volker Jaedicke, Ralf Stroop , Kirsten Schmieder, Martin R. Hofmann

Proc. SPIE 9541, Optical Coherence Imaging Techniques and Imaging in Scattering Media, 95411D München (2015); doi:10.1117/12.2183614 [Link]

Increasing the birefringence of VCSELs beyond 250 GHz

2015 - Pusch, T., Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Michalzik, R.

Conference on Lasers and Electro-Optics Europe, CLEO/Europe 2015, paper CB-2.2., Munich, German, 2015

Tuning the Frequency of Polarization Oscillations in Spin VCSELs by Mechanical Strain Induction in GHz-Range

2015 - Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

Conference on Lasers and Electro-Optics Europe, CLEO/Europe 2015, paper: CB-2.1, München

Quantitative phase imaging by wide field lensless digital holographic microscope

2015 - Adamou Adinda-Ougba, Nektarios Koukourakis, Aissam Essaidi, Nils C. Gerhardt, Martin R. Hofmann

SPIE Optical Metrology, Munich, Germany (2015)

Quantitative phase imaging by wide field lensless digital holographic microscope

2015 - Adamou Adinda-Ougba, Nektarios Koukourakis, Aissam Essaidi, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE 9529, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials II, 952903 (June 22, 2015),doi:10.1117/12.2184471 [Link]

Intracavity Loss and Dispersion Managed Mode-Locked Diode Laser

2015 - Jan C. Balzer, Benjamin Döpke, Rouven H. Pilny, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

CLEO , San Jose, USA (2015)

Passively Mode-Locked Diode Laser With Optimized Dispersion Management

2015 - Jan C. Balzer, Rouven H. Pilny, Benjamin Döpke, Klehr, A., Erbert, G., Tränkle, G., Carsten Brenner, Martin R. Hofmann

IEEE STQE, Volume 21, Issue 6, 1101008 (2015); doi: 10.1109/JSTQE.2015.2418225 [Link]

Phase and amplitude calibration of dual-mask spatial light modulator for high-resolution femtosecond pulse shaping

2015 - Benjamin Döpke, Jan C. Balzer, Martin R. Hofmann

Electron. Lett. - Vol. 51 Issue 8 pp. 642-644.

Self-optimizing femtosecond semiconductor laser

2015 - Benjamin Döpke, Rouven H. Pilny, Carsten Brenner, Andreas Klehr, Götz Erbert, Günther Tränkle, Jan C. Balzer, Martin R. Hofmann

Opt. Express, Vol. 23, Issue 8, pp. 9710-9716 (2015); doi: 10.1364/OE.23.009710 [Link]

Ultrashort pulse generation with semiconductor lasers using intracavity phase- and amplitude pulse shaping

2015 - Benjamin Döpke, Jan C. Balzer, Rouven H. Pilny, Carsten Brenner, Andreas Klehr, Götz Erbert, Gün­ther Tränkle, Martin R. Hofmann

SPIE Photonics West (OPTO), San Francisco (2015) – #9382-13

Ultrashort pulse generation with semiconductor lasers using intracavity phase- and amplitude pulse shaping

2015 - Benjamin Döpke, Jan C. Balzer, Rouven H. Pilny, Carsten Brenner, Andreas Klehr, Götz Erbert, Gün­ther Tränkle, Martin R. Hofmann

SPIE Photonics West (OPTO), San Francisco (2015)

Controlling the frequency of ultra-fast polarization oscillations in spin-VCSELs

2015 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

DPG Frühjahrstagung Berlin, (15.-20.03.2015)

Ultrafast polarization dynamics with controlled polarization oscillations in vertical-cavity surface-emitting lasers

2015 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

Proc. SPIE 9381, Vertical-Cavity Surface-Emitting Lasers XIX, 93810I (March 4, 2015); doi: 10.1117/12.2076920 [Link]

Ultrafast polarization dynamics with controlled polarization oscillations in vertical-cavity surface-emitting lasers

2015 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , Tobias Pusch, Rainer Michalzik

Photonics West, San Francisco, (7.-12.02.2015)

In vivo analysis of burns in a mouse model using spectroscopic optical coherence tomography

2014 - J. Maher, Volker Jaedicke, M. Medina, H. Levinson, M. Selim, W. Brown, A. Wax

Opt. Lett. 39, 5594-5597 (2014)

Development and evaluation of a device for simultaneous uniaxial compression and optical imaging of cartilage samples in vitro

2014 - Marian Steinert, Kratz, Marita, Volker Jaedicke, Martin R. Hofmann , Jones, David B.

Review of Scientific Instruments, Vol. 85, Issue 10, Article Number 104301 (2014) [Link]

Effects of axial scanning in confocal microscopy employing adaptive optics (CAL)

2014 - Nektarios Koukourakis, Markus Finkeldey, M. Stürmer, Nils C. Gerhardt, U. Wallrabe, Martin R. Hofmann , J.W. Czarske, A. Fischer

Optical Micro- and Nanometrology V, 91320P (2014)

Multiwavelength phase unwrapping and aberration correction using depth filtered digital holography

2014 - Volker Jaedicke, Sebastian Goebel, Nektarios Koukourakis, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Optics Letters, 39 (14), 4160-4163 (2014)

Polarization dynamics in spin-polarized vertical-cavity surface-emitting lasers

2014 - Nils C. Gerhardt, Henning Höpfner, Markus Lindemann, Martin R. Hofmann

Proc. SPIE, 9167, Spintronics VII, 916703 (2014)

Spin-controlled ultrafast vertical-cavity surface-emitting lasers

2014 - Henning Höpfner, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE, 9134, Semiconductor Lasers and Laser Dynamics VI, 913408 (2014)

Employing electrically tunable lenses in confocal microscopy for axial scanning

2014 - Nektarios Koukourakis, Markus Finkeldey, M. Stürmer, C. Leithold, Nils C. Gerhardt, U. Wallrabe, Martin R. Hofmann , J.W. Czarske, A. Fischer

23th Congress of the International Commission for Optics: Enlightening the future, Santiago de Compostela, Spain (2014)

Polarization dynamics in spin-polarized vertical-cavity surface-emitting lasers

2014 - Nils C. Gerhardt, Henning Höpfner, Markus Lindemann, Martin R. Hofmann

SPIE Optics + Photonics, San Diego, California, USA (2014) –invited-

Effects of axial scanning in confocal microscopy employing adaptive optics (CAL)

2014 - Nektarios Koukourakis, Markus Finkeldey, M. Stürmer, Nils C. Gerhardt, U. Wallrabe, Martin R. Hofmann , J.W. Czarske, A. Fischer

Photonics Europe, Brussel, Belgium (2014)

Spin-controlled ultrafast vertical-cavity surface-emitting lasers

2014 - Henning Höpfner, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann

SPIE Photonics Europe, Brussel, Belgium (2014)

Coherent switching of polarization oscillations in vertical-cavity surface-emitting lasers

2014 - Henning Höpfner, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann

SPIE Photonics West, San Francisco, California, USA (2014)

Performance comparison of different metrics for spectroscopic optical coherence tomography

2014 - Volker Jaedicke, Semih Agcaer , F.E. Robles, N. Steinert, D. Jones, Sebastian Goebel, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

SPIE Photonics West, San Francisco, California, USA (2014)

Mode-locked semiconductor laser system with intracavity spatial light modulator for linear and nonlinear dispersion management

2014 - Jan C. Balzer, Benjamin Döpke, Carsten Brenner, A. Klehr, G. Erbert, G. Tränkle, Martin R. Hofmann

Opt. Express 22, 18093-18100 (2014)

Controlled switching of ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers

2014 - Markus Lindemann, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann

SIOE, Cardiff, UK

Polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers controlled by multiple excitation pulses

2014 - Henning Höpfner, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann

DPG Frühjahrstagung, Dresden, Germany (2014)

Performance comparison of different metrics for spectroscopic optical coherence tomography

2014 - Volker Jaedicke, Semih Agcaer , Francisco E. Robles, Marian Steinert, David Jones, Sebastian Goebel, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Proc. SPIE 8952, Biomedical Applications of Light Scattering VIII, 89520Z (March 4, 2014); doi:10.1117/12.2038891 [Link]

Quantitative phase microscopy with off-axis optical coherence tomography

2014 - Matthew T. Rinehart, Volker Jaedicke, Adam Wax

Opt. Lett. 39, 1996-1999 (2014) [Link]

Axial scanning in confocal microscopy employing adaptive lenses (CAL)

2014 - Nektarios Koukourakis, Markus Finkeldey, Moritz Stürmer, Christoph Leithold, Nils C. Gerhardt, Martin R. Hofmann , Ulrike Wallrabe, Jürgen W. Czarske, Andreas Fischer

OPTICS EXPRESS 6025; DOI:10.1364/OE.22.006025 [Paper]

Coherent Switching of Polarization Oscillations in Vertical-Cavity Surface-Emitting Lasers

2014 - Henning Höpfner, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann

Proceedings of SPIE 9001, 90010G (2014) [Link]

Femtosecond semiconductor laser system with arbitrary intracavity phase and amplitude manipulation

2014 - Jan C. Balzer, Benjamin Döpke, A. Klehr, G. Erbert, G Tränkle, Martin R. Hofmann

SPIE OPTO, 90020D-90020D-6 (2014)

In-situ calibration of spatial light modulators in femtosecond pulse shapers

2014 - Benjamin Döpke, Jan C. Balzer, Martin R. Hofmann

SPIE OPTO, 90040D-90040D-6 (2014)

Femtosecond semiconductor laser system with arbitrary intracavity phase and amplitude manipulation

2014 - Jan C. Balzer, Benjamin Döpke, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

SPIE Photonics West (OPTO), San Francisco (2014) – #9002-12

In-situ calibration of spatial light modulators in femtosecond pulse shapers

2014 - Benjamin Döpke, Jan C. Balzer, Martin R. Hofmann

SPIE Photonics West (OPTO), San Francisco (2014) – # 9004-11

Controlled switching of ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers

2014 - Henning Höpfner, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann

Applied Physics Letters 104 (2), 022409 (2014) [Link]

High power femtosecond diode laser systems

2013 - Jan C. Balzer, Benjamin Döpke, Martin R. Hofmann , Andreas Klehr, Thomas Hoffmann, Götz Erbert, Günther Tränkle

Photonik I/2013 pp. 66-69

Comparison of different metrics for analysis and visualization in spectroscopic optical coherence tomography

2013 - Volker Jaedicke, Semih Agcaer , Francisco E. Robles, Marian Steinert, David Jones, Sebastian Goebel, Nils C. Gerhardt, Hubert Welp, Martin R. Hofmann

Biomedical Optics Express, Vol. 4, Issue 12, pp. 2945-2961 (2013) [Link]

Quantum Dot Spintronics: Fundamentals and Applications

2013 - A. Ludwig, B. Sothmann, Henning Höpfner, Nils C. Gerhardt, J. Nannen, T. Kümmell, J. König, Martin R. Hofmann , G. Bacher, A.D. Wieck

in H. Zabel and M. Farle (eds.), Magnetic Nanostructures, Springer Tracts in Modern Physics 246, 235 (2013)

Spin injection, transport, and relaxation in spin light-emitting diodes: magnetic field effects

2013 - Henning Höpfner, Carola Fritsche, Arne Ludwig, Astrid Ludwig, Frank Stromberg, Heiko Wende, Werner Keune, Dirk Reuter, Andreas D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

Proceeding of SPIE 8813, 43 (2013) (Invited Paper)

Ultrafast spin-polarized vertical-cavity surface-emitting lasers

2013 - Nils C. Gerhardt, Henning Höpfner, Markus Lindemann, Mingyuan Li, Hendrik Jähme, Thorsten Ackemann, Martin R. Hofmann

Proceedings of SPIE 8813, 80 (2013) (Invited Paper)

Spin relaxation in spin light-emitting diodes: effect of magnetic field and temperature

2013 - Henning Höpfner, Carola Fritsche, A. Ludwig, A. Ludwig, F. Stromberg, H. Wende, W. Keune, D. Reuter, A.D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

Proc. SPIE, 8623, 86230A (2013)

Spin injection, transport, and relaxation in spin-light emitting diodes: magnetic field effects

2013 - Henning Höpfner, Carola Fritsche, A. Ludwig, A. Ludwig, F. Stromberg, H. Wende, W. Keune, D. Reuter, A.D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

SPIE Optics + Photonics, San Diego, California, USA (2013) –invited-

Ultrafast spin-polarized vertical-cavity surface-emitting lasers

2013 - Nils C. Gerhardt, Henning Höpfner, Markus Lindemann, Mingyuan Li, Hendrik Jähme, T. Ackemann, Martin R. Hofmann

SPIE Optics + Photonics, San Diego, California, USA (2013) –invited-

Quantitative phase analysis through scattering media by depth-filtered digital holography

2013 - Sebastian Goebel, Volker Jaedicke, Nektarios Koukourakis, Helge Wiethoff, Adamou Adinda-Ougba, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

SPIE Photonics West, San Francisco, California, USA (2013)

Spectroscopic optical coherence tomography with graphics processing unit based analysis of three dimensional data sets

2013 - Volker Jaedicke, Semih Agcaer , Sebastian Goebel, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

SPIE Photonics West, San Francisco, California, USA (2013)

Spin relaxation in spin light-emitting diodes: effect of magnetic field and temperature

2013 - Henning Höpfner, Carola Fritsche, A. Ludwig, A. Ludwig, F. Stromberg, H. Wende, W. Keune, D. Reuter, A.D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

SPIE Photonics West, San Francisco, California, USA (2013)

High peak power pulses from dispersion optimised modelocked semiconductor laser

2013 - Jan C. Balzer, Tobias Schlauch, A. Klehr, G. Erbert, G. Tränkle, Martin R. Hofmann

Electronics Letters,49,13,838-839,2013,IET Digital Library

Contrast enhancement for scattering samples in spectroscopic optical coherence tomography using pattern recognition

2013 - Volker Jaedicke, Sebastian Goebel, Semih Agcaer , Nils C. Gerhardt, Hubert Welp, Martin R. Hofmann

ECBO 2013, Munich, Germany

Spin relaxation length in quantum dot spin LEDs

2013 - Henning Höpfner, Carola Fritsche, Ludwig, A., Ludwig, A., Stromberg, F., Wende, H., Keune, W., Reuter, D., Wieck, A. D., Nils C. Gerhardt, Martin R. Hofmann

Physica Status Solidi (C) 10 (9), 1214-1217 (2013) [Link]

Mode-Locked semiconductor laser with controllable intracavity dispersion and absorption

2013 - Jan C. Balzer, Benjamin Döpke, A. Klehr, G. Erbert, G. Tränkle, Martin R. Hofmann

The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC)

Holmium-doped Lu2O3, Y2O3, and Sc2O3 for lasers above 2.1 µm

2013 - Philipp Koopmann, Samir Lamrini, Karsten Scholle, Michael Schäfer, Peter Fuhrberg, Günter Huber

Optics Express 21, 3926-3931 (2013)

Non-exponential photoluminescence transients in GaNAsP lattice matched to (001) silicon substrate

2013 - Nils C. Gerhardt, Nektarios Koukourakis, Markus Finkeldey, Martin R. Hofmann , M. Zimprich, K. Volz, W. Stolz, K. Jandieri, F. Gebhard, S. Baranovskii , B. Kunert

DPG Frühjahrstagung, Regensburg, Germany (2013)

Optical gain and lasing in GaNAsP/BGa(As)P heterostructures grown on (001) silicon substrate

2013 - Markus Finkeldey, Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann , M. Zimprich, K. Volz, W. Stolz, B. Kunert

DPG Frühjahrstagung, Regensburg, Germany (2013)

Spin injection and spin relaxation: Magnetic field effects

2013 - Henning Höpfner, Carola Fritsche, A. Ludwig, A. Ludwig, F. Stromberg, H. Wende, W. Keune, D. Reuter, A.D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

DPG Frühjahrstagung, Regensburg, Germany (2013)

Intracavity Cubic Phase Manipulation of Mode-Locked Semiconductor Lasers

2013 - Benjamin Döpke, Jan C. Balzer, A. Klehr, G. Erbert, G. Tränkle, Martin R. Hofmann

SIOE, Cardiff, UK

Leistungsstarke Femtosekunden-Diodenlasersysteme

2013 - Jan C. Balzer, Benjamin Döpke, Martin R. Hofmann , Andreas Klehr, Thomas Hoffmann, Götz Erbert, Günther Tränkle

Photonik 2/2013 pp. 38-41

Semiconductor diode lasers for THz technology

2013 - Martin R. Hofmann

Herausgeber: Nordrhein-Westfälische Akademie der Wissenschaften und der Künste, IW37 Ferdinand Schöningh, Paderborn 2013

Quantitative phase analysis through scattering media by depth-filtered digital holography

2013 - Sebastian Goebel, Volker Jaedicke, Nektarios Koukourakis, Helge Wiethoff, Adamou Adinda-Ougba, Nils C. Gerhardt, Hubert Welp , Martin R. Hofmann

Proc. SPIE 8589, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XX, 85891J (February 22, 2013); doi:10.1117/12.2001159

Spectroscopic optical coherence tomography with graphics processing unit based analysis of three dimensional data sets

2013 - Volker Jaedicke, Semih Agcaer , Sebastian Goebel, Nils C. Gerhardt, Hubert Welp, Martin R. Hofmann

Proc. SPIE 8592, Biomedical Applications of Light Scattering VII, 859215 (February 21, 2013); doi:10.1117/12.2000464

Non-exponential photoluminescence transients in Ga(NAsP) lattice matched to (001) silicon substrate

2013 - K. Jandieri, B. Kunert, S. Liebich, M. Zimprich, K. Volz, W. Stolz, F. Gebhard, S.D. Baranovskii, Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann

Phys. Rev. B, Vol.87, No.3, 035303 (2013)

Photoacoustic Blood Oxygenation Imaging Based on Semiconductor Lasers

2012 - Claus-Stefan Friedrich, Martin P. Mienkina, Carsten Brenner, Nils C. Gerhardt, Manfred Jörger, Andreas Strauß, Martin F. Beckmann, Georg Schmitz, Martin R. Hofmann

Photonics and Optoelectronics (P&O) 1, 48 (2012)

Terahertz Picosecond Pulse Photomixing with Colliding Pulse Modelocked Lasers

2012 - Carsten Brenner, Heiko Horstkemper, I. Cámara Mayorga, A. Klehr, G. Erbert, Martin R. Hofmann

ESLW 2012, Brüssel, Belgien

"Erratum: "Room temperature spin relaxation length in spin light-emitting diodes"

2012 - Henning Höpfner, Mingyuan Li, Nils C. Gerhardt, Martin R. Hofmann , A. Ludwig, A. Ebbing, D. Reuter, A.D. Wieck, F. Stromberg, W. Keune, H. Wende

[Appl. Phys. Lett. 99, 051102 (2011)]”, Appl. Phys. Lett. 100 (26), 269902 (2012)

Analysis of birefringence controlled ultrafast polarization oscillations in spin vertical-cavity surface-emitting lasers

2012 - Mingyuan Li, T. Ackemann, Nils C. Gerhardt, Martin R. Hofmann

EOS Annual Meeting, Aberdeen, UK (2012)

Spin-Controlled Vertical-Cavity Surface-Emitting Lasers

2012 - Nils C. Gerhardt, Martin R. Hofmann

Advances of Optical Technologies, 2012, 268949 (2012)

Time-resolved photoluminescence and optical gain in Ga(NAsP) heterostructures pseudomorphically grown on silicon

2012 - Nils C. Gerhardt, Nektarios Koukourakis, Max Klimasch, Martin R. Hofmann , S. Liebich, M. Zimprich, K. Volz, W. Stolz, B. Kunert

E-MRS Spring Meeting, Strasbourg, France (2012)

Magnetic field dependence of the spin relaxation length in spin light-emitting diodes

2012 - Henning Höpfner, Carola Fritsche, Arne Ludwig, Astrid Ludwig, Frank Stromberg, Heiko Wende, Werner Keune, Dirk Reuter, Andreas D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

Applied Physics Letters 101 (11), 112402 (2012)

Spin relaxation length in quantum dot spin LEDs

2012 - Henning Höpfner, Carola Fritsche, Arne Ludwig, Astrid Ludwig, Frank Stromberg, Heiko Wende, Werner Keune, Dirk Reuter, Andreas D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

NOEKS11, Stuttgart, September 2012

Signal Processing for Spectroscopic Optical Coherence Tomography

2012 - Volker Jaedicke, Sebastian Goebel, Semih Agcaer , Christoph Kasseck, Nils C. Gerhardt, H. Welp , Martin R. Hofmann

VII International Workshop on Biosignal Interpretation, Como, Italy (2012)

Neue optische Verfahren für die biomedizinische Bildgebung

2012 - Martin R. Hofmann

5. NRW Nanokonferenz, Dortmund, September 2012 (invited)

Depth-filtered digital holography

2012 - Nektarios Koukourakis, Volker Jaedicke, Adamou Adinda-Ougba, Sebastian Goebel, Helge Wiethoff, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann

Optics Express Vol. *20*, Iss. 20, 22636--22648 (2012)

Multispectral photoacoustic coded excitation using pseudorandom codes

2012 - Martin F. Beckmann, Claus-Stefan Friedrich, Martin P. Mienkina, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc. SPIE, 8223, 82231E (2012)

Signal Processing for Spectroscopic Optical Coherence Tomography

2012 - Sebastian Goebel, Semih Agcaer , Volker Jaedicke, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Biomedizinische Technik. Biomedical engineering, vol. 57, p. 4258, Aug. 2012

System development for Spectroscopic Optical Coherence Tomography

2012 - Volker Jaedicke, Semih Agcaer , Sebastian Goebel, Helge Wiethoff, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Biomedizinische Technik. Biomedical engineering, vol. 57, p. 4245, Aug. 2012

Signal Processing in Spectroscopic Optical Coherence Tomography

2012 - Sebastian Goebel, Volker Jaedicke, Semih Agcaer , Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Biomedical Engineering, Jena, Germany (2012)

System development for Spectroscopic Optical Coherence Tomography

2012 - Volker Jaedicke, Semih Agcaer , Sebastian Goebel, Helge Wiethoff, Nils C. Gerhardt, H. Welp , Martin R. Hofmann

Biomedical Engineering, Jena, Germany (2012)

Ultrafast spin-induced polarization oscillations in vertical-cavity surface-emitting lasers

2012 - Nils C. Gerhardt, Mingyuan Li, Hendrik Jähme, Henning Höpfner, Thorsten Ackemann, Martin R. Hofmann

VCSEL Day 2012, Berlin, June 2012

Spin relaxation dynamics in spin-LEDs

2012 - Henning Höpfner, Carola Fritsche, A. Ludwig, A. Ludwig, F. Stromberg, H. Wende, W. Keune, D. Reuter, A.D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

DPG Frühjahrstagung, Berlin, Germany (2012)

Temperature dependence of the spin relaxation length in spin quantum dot LEDs

2012 - Carola Fritsche, Henning Höpfner, A. Ludwig, A. Ludwig, F. Stromberg, H. Wende, W. Keune, D. Reuter, A.D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

DPG Frühjahrstagung, Berlin, Germany (2012)

Time-resolved photoluminescence and optical gain in Ga(NAsP) pseudomorphically grown on silicon

2012 - Nektarios Koukourakis, Max Klimasch, Nils C. Gerhardt, Martin R. Hofmann , S. Liebich, D. Trusheim, M. Zimprich, K. Volz, W. Stolz, B. Kunert

DPG Frühjahrstagung, Berlin, Germany (2012)

Diode Pumped Q-switched Ho:Lu2O3 Laser at 2.12 µm

2012 - Samir Lamrini, P. Koopmann, K. Scholle, P. Fuhrberg, G. Huber

Conference on Lasers and Electro-Optics, OSA Technical Digest (CD) (Optical Society of America, 2012), paper CTu2D.1

High room-temperature optical gain in Ga(NAsP)/Si heterostructures

2012 - Nektarios Koukourakis, Christina Bückers, Dominic A. Funke, Nils C. Gerhardt, Sven Liebich, Sangam Chatterjee, Christoph Lange, Martin Zimprich, Kertsin Volz, Wolfgang Stolz, B. Kunert, S.W. Koch, Martin R. Hofmann

Applied Phys. Letters *100, *092107 (2012)

Photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate

2012 - Nektarios Koukourakis, Max Klimasch, Dominic A. Funke, Nils C. Gerhardt, Martin R. Hofmann , Sven Liebich, Martin Zimprich, Bernardette Kunert, Kerstin Volz, Wolfgang Stolz

SPIE Photonics West (OPTO), San Francisco (2012), [82660R]

Photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate

2012 - Nektarios Koukourakis, Max Klimasch, Dominic A. Funke, Nils C. Gerhardt, Martin R. Hofmann , Sven Liebich, Martin Zimprich, Bernardette Kunert, Kerstin Volz, Wolfgang Stolz

SPIE Proceeding 82660R (2012)

Room temperature spin relaxation in quantum dot based spin-optoelectronic devices

2012 - Henning Höpfner, Mingyuan Li, Arne Ludwig, Astrid Ludwig, Frank Stromberg, Heiko Wende, Werner Keune, Dirk Reuter, Andreas D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

SPIE Photonics West 2012, Ultrafast Phenomena and Nanophotonics XVI, 8260-09, San Francisco, USA

Room temperature spin relaxation in quantum dot based spin-optoelectronic devices

2012 - Henning Höpfner, Mingyuan Li, Arne Ludwig, Astrid Ludwig, Frank Stromberg, Heiko Wende, Werner Keune, Dirk Reuter, Andreas D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

Proceedings of SPIE, 8260, 82600A (2012) DOI: 10.1117/12.907821 [Link]

All semiconductor high power fs laser system with variable repetition rate

2012 - Jan C. Balzer, Tobias Schlauch, A. Klehr, G. Erbert, Martin R. Hofmann

Proc. SPIE 8277, 827713 (2012)

Directly diode-pumped high-energy Ho:YAG oscillator

2012 - Samir Lamrini, Philipp Koopmann, Michael Schäfer, Karsten Scholle, Peter Fuhrberg

Opt. Lett. 37, 515-517 (2012)

All semiconductor high power fs laser system with variable repetition rate

2012 - Jan C. Balzer, Tobias Schlauch, Thomas Hoffmann, Andreas Klehr, Goetz Erbert, Martin R. Hofmann

SPIE Photonics West (OPTO), San Francisco (2012) – #8277-39

Multispectral photoacoustic coded excitation using pseudorandom codes

2012 - Martin F. Beckmann, Claus-Stefan Friedrich, Martin P. Mienkina, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc SPIE 8223, 2012, pp 82231E-1 - 82231E-8 doi:10.1117/12.907427 [SPIE Library] [DOI]

Holmium-Doped Lutetia: A Novel Diode Pumped Laser at 2124 nm

2012 - P. Koopmann, Samir Lamrini, K. Scholle, C. Kränkel, P. Fuhrberg, G. Huber

In Proceedings of Advances in Optical Materials 2012, # IW5D.4 (2012)

Effcient High-Power Ho:YAG Laser Directly in-Band Pumped by a GaSb-Based Laser Diode Stack at 1.9 µm

2012 - Samir Lamrini, P. Koopmann, M. Schäfer, K. Scholle, P. Fuhrberg

Appl. Phys. B 106, 315-319 (2012)

Modelocked semiconductor laser system with pulse picking for variable repetition rate

2011 - Jan C. Balzer, Tobias Schlauch, Th. Hoffmann, A. Klehr, G. Erbert, Martin R. Hofmann

Electron. Lett. -- 8 December 2011 -- Volume 47, Issue 25, p.1387–1388

Ultrafast spin-induced polarization oscillations with tunable lifetime in vertical-cavity surface-emitting lasers

2011 - Nils C. Gerhardt, Mingyuan Li, Hendrik Jähme, Henning Höpfner, T. Ackemann, Martin R. Hofmann

Appl. Phys. Lett. 99, 151107 (2011)

High-throughput characterization of film thickness in thin film materials libraries by digital holographic microscopy

2011 - Ryan Yiu Wai Lai, Michael Krause, Alan Savan, Sigurd Thienhaus, Nektarios Koukourakis, Martin R. Hofmann , Alfred Ludwig

Sci. Technol. Adv. Mater. 12 (2011) 054201 (6pp)

Photorefractive two-wave mixing for image amplification in digital holography

2011 - Nektarios Koukourakis, Tarek Abdelwahab, Mingyuan Li, Henning Höpfner, Ryan Yiu Wai Lai, Emmanouil Darakis, Carsten Brenner, Nils C. Gerhardt, Martin R. Hofmann

OPTICS EXPRESS Vol. 19, No. 22 22004 (2011)

Time-resolved photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate

2011 - Nils C. Gerhardt, Nektarios Koukourakis, Max Klimasch, Dominic Funke, Martin R. Hofmann , B. Kunert, S. Liebich, D. Trusheim, M. Zimprich, K. Volz, W. Stolz

Transparent Optical Networks (ICTON), 2011 13th International Conference on, pp.1-4, (2011)

Photoacoustic Coded Excitation using Periodically Perfect Sequences

2011 - Martin F. Beckmann, Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

IEEE Int. Ultrasonics Symposium 2011, Orlando, FL, 2011, pp. 1179 - 1182 doi:10.1109/ULTSYM.2011.0290 [DOI]

High modal gain in Ga(NAsP)/(BGa)((As)P) heterostructures grown lattice matched on (001) silicon

2011 - Nektarios Koukourakis, Dominic Funke, Nils C. Gerhardt, Martin R. Hofmann , S. Liebich, C. Bückers, S. Zinnkann, M. Zimprich, A. Beyers, S. Chatterjee, S.W. Koch, B. Kunert, K. Volz , W. Stolz

Proc. SPIE, 7939, 793927 (2011)

Quantitative photoacoustic blood oxygenation measurement of whole porcine blood samples using a multi-wavelength semiconductor laser system

2011 - Claus-Stefan Friedrich, Martin P. Mienkina, Carsten Brenner, Nils C. Gerhardt, M. Jörger, A. Strauß, Martin F. Beckmann, Georg Schmitz, Martin R. Hofmann

Proc. SPIE-OSA Biomedical Optics 8088, 808814-1 (2011)

Spin induced gigahertz polarization oscillations in vertical surface-emitting laser devices

2011 - Mingyuan Li, Hendrik Jähme, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , T. Ackemann

Proc. SPIE, 7952, 79520B (2011)

Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudo-morphically grown on Silicon (001) substrate

2011 - Nektarios Koukourakis, Dominic Funke, Nils C. Gerhardt, Martin R. Hofmann , B. Kunert, S. Liebich, D. Trusheim, M. Zimprich, C. Bückers, S.W. Koch, K. Volz, W. Stolz

OSA, CLEO/IQEC, Baltimore, Maryland, USA (2011)

Time-resolved photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on Silicon (001) substrate

2011 - Nils C. Gerhardt, Nektarios Koukourakis, Max Klimasch, Dominic Funke, Martin R. Hofmann , B. Kunert, S. Liebich, D. Trusheim, M. Zimprich, K. Volz, W. Stolz

13th International Conference on Transparent Optical Networks (ICTON), Stockholm, Sweden (2011)

Room temperature spin relaxation length in spin light-emitting diodes

2011 - Henning Höpfner, Mingyuan Li, Nils C. Gerhardt, Martin R. Hofmann , Arne Ludwig, Astrid Ebbing, Dirk Reuter, Andreas D. Wieck, Frank Stromberg, Heiko Wende, Werner Keune

Appl. Phys. Lett. 99 (5) 051102 (2011)

Semiconductor diode lasers for terahertz technology

2011 - Carsten Brenner, Claus-Stefan Friedrich, Martin R. Hofmann

Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 32, No. 11, pp 1253-1266 (2011)

Optical system analysis and optimization in spectroscopic optical coherence tomography

2011 - Volker Jaedicke, Helge Wiethoff, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Biomedical Engineering, Freiburg, Germany (2011)

Colliding pulse mode-locked lasers as light sources for single-shot holography

2011 - Doris Grosse, Nektarios Koukourakis, Nils C. Gerhardt, Tobias Schlauch, Jan C. Balzer, Klehr, A., Erbert, G., Tränkele, G., Martin R. Hofmann

In International Conference on Applications of Optics and Photonics (pp. 80010O-80010O). International Society for Optics and Photonics.

Single-shot holography with colliding pulse mode-locked lasers as light source

2011 - Doris Grosse, Nektarios Koukourakis, Nils C. Gerhardt, Tobias Schlauch, Jan C. Balzer, Klehr, A., Erbert, G. , Tränkele, G., Martin R. Hofmann

Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), Sydney, Australia, 2011.

Colliding pulse mode-locked lasers as light sources for single-shot holography

2011 - Doris Grosse, Nektarios Koukourakis, Tobias Schlauch, Jan C. Balzer, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

International Conference on Applications of Optics and Photonics (AOP), Braga, Protugal, 2011.

Single-shot holography with colliding pulse mode-locked lasers as light source

2011 - Doris Grosse, Nektarios Koukourakis, Nils C. Gerhardt, Tobias Schlauch, Jan C. Balzer, A. Klehr, G. Erbert, G. Tränkle, Martin R. Hofmann

In Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011 (pp. 1693-1695). IEEE.

Colliding pulse mode-locked lasers as light sources for single-shot holography

2011 - Doris Grosse, Nektarios Koukourakis, Tobias Schlauch, Jan C. Balzer, Andreas Klehr, Götz Erbert, Günther Tränkle, Martin R. Hofmann

Semiconductor and Integrated Optoelectronics (SIOE) conference, Cardiff, Wales, United Kingdom, 2011

Fastly tunable External-Cavity Diode-Lasers Controlled by Electro-Absorption Modulators

2011 - Hendrik Jähme, M. Bülters, D. Jäger, Martin R. Hofmann

CLEO Europe München

Optical coherence tomography in dermatology: technical and clinical aspects

2011 - Thilo Gambichler, Volker Jaedicke, Sarah Terras

Archives of Dermatological Research, 2011-06-07,1-17, Doi: 10.1007/s00403-011-1152-x [Link]

Spectroscopic Optical Coherence Tomography for substance differentiation

2011 - Volker Jaedicke, Helge Wiethoff, Christoph Kasseck, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

International Symposium on Optical Coherence Tomography. Ilmenau, Germany (2011)

Shoe box all semiconductor high power femtosecond laser system

2011 - Jan C. Balzer, Tobias Schlauch, Martin R. Hofmann , A. Klehr, G. Erbert

CLEO/Europe-EQEC 2011

Multi-watt laser operation and laser parameters of Ho-doped Lu2O3 at 2.12 µm

2011 - P. Koopmann, Samir Lamrini, K. Scholle, M. Schäfer, P. Fuhrberg, G. Huber

Optical Materials Express 1, 1447-1456 (2011)

Efficient diode-pumped laser operation of Tm:Lu2O3 around 2 µm

2011 - P. Koopmann, Samir Lamrini, K. Scholle, P. Fuhrberg, K. Petermann, G. Huber

Optics Letters 36, 948-950 (2011)

Birefringence and spin controlled ultrafast polarization oscillations in vertical-cavity surface-emitting lasers

2011 - Mingyuan Li, Hendrik Jähme, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , T. Ackemann

CLEO Europe 2011, Munich, Germany

Quantitative photoacoustic blood oxygenation measurement of whole porcine blood samples using a multi-wavelength semiconductor laser system

2011 - Claus-Stefan Friedrich, Martin P. Mienkina, Carsten Brenner, Nils C. Gerhardt, Manfred Jörger, Andreas Strauß, Martin F. Beckmann, Georg Schmitz, Martin R. Hofmann

SPIE / OSA European Conferences on Biomedical Optics 2011, 8088-40, Munich, Germany, 2011

Electrical spin injection inInAs quantum dots at room temperature and adjustment of the emission wavelength for spintronic applications

2011 - A. Ludwig, R. Roescu, A.K. Rai, K. Trunov, F. Stromberg, Mingyuan Li, Henning Höpfner, A. Ebbing, Nils C. Gerhardt, Martin R. Hofmann , H. Wende, W. Keune, D. Reuter, A.D. Wieck

Journal of Crystal Growth, Volume 323, Issue 1, 15 May 2011, Pages 376-379

Perpendicular spin injection and polarization features in InAs quantum dots

2011 - A. Ludwig, Henning Höpfner, F. Stromberg, A. Ebbing, A. Warland, Mingyuan Li, Nils C. Gerhardt, D. Reuter, O. Petracic, Martin R. Hofmann , H. Wende, W. Keune , A.D. Wieck

DPG Frühjahrstagung, Dresden, Germany (2011)

Remanent spin injection and spin relaxation in quantum dot light-emitting diodes

2011 - Henning Höpfner, Mingyuan Li, A. Ludwig, A. Ebbing, F. Stromberg, H. Wende, W. Keune, D. Reuter, A.D. Wieck, Nils C. Gerhardt, Martin R. Hofmann

DPG Frühjahrstagung, Dresden, Germany (2011)

Time-resolved photoluminescence in GaNAsP heterostructures grown on silicon

2011 - Nektarios Koukourakis, Dominic Funke, Nils C. Gerhardt, Martin R. Hofmann , B. Kunert, Sven Liebich, S. Zinnkann, M. Zimprich, K. Volz, W. Stolz

DPG Frühjahrstagung, Dresden, Germany (2011)

Spectroscopic optical coherence tomography for substance identification

2011 - Volker Jaedicke, Helge Wiethoff, Semih Agcaer , Christoph Kasseck, Nils C. Gerhardt, Hubert Welp, Martin R. Hofmann

Proc. SPIE 8091, 80911U (2011), DOI:10.1117/12.889651

Spectroscopic optical coherence tomography for substance identification

2011 - Volker Jaedicke, Helge Wiethoff, Semih Agcaer , Christoph Kasseck, Nils C. Gerhardt, Hubert Welp, Martin R. Hofmann

ECBO 2011, Munich, Germany

High Power Wavelength Stabilized Tm-Fibre Laser with FBG Written into the Core of the Active Fibre

2011 - K. Scholle, Samir Lamrini, P. Koopmann, M. Schäfer, J. Thomas, C. Voigtländer, S. Nolte, P. Fuhrberg

In Proceedings of CLEO Europe – EQEC 2011, # CJ8.3 (2011)

Efficient Laser Operation of Ho:Lu2O3 at Room Temperature

2011 - Samir Lamrini, P. Koopmann, M. Schäfer, K. Scholle, P. Fuhrberg, K. Petermann, G. Huber

In Proceedings of CLEO Europe – EQEC 2011, # CA1.6 (2011)

Optical gain in GaNAsP heterostructures pseudomorphically grown on silicon

2011 - Nektarios Koukourakis, Dominic Funke, Nils C. Gerhardt, Martin R. Hofmann , B. Kunert, S. Liebich, C. Bückers, S. Zinnkann, M. Zimprich, K. Volz, S.W. Koch , W. Stolz

DPG Frühjahrstagung, Dresden, Germany (2011)

Laser Operation and Spectroscopic Investigations of Tm:LuScO3

2011 - P. Koopmann, Samir Lamrini, K. Scholle, P. Fuhrberg, K. Petermann, G. Huber

In Proceedings of CLEO Europe – EQEC 2011, # CA1.4 (2011)

Spin induced gigahertz polarization oscillations in vertical-cavity surface-emitting laser devices

2011 - Mingyuan Li, Hendrik Jähme, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , T. Ackemann

SPIE Photonics West 2011, San Francisco, USA

Long Wavelength Laser Operation of Tm:Sc2O3 at 2116 nm and Beyond

2011 - P. Koopmann, Samir Lamrini, K. Scholle, P. Fuhrberg, K. Petermann, G. Huber

In Proceedings of Advanced Solid State Photonics 2011, # ATuA5 (2011)

Semiconductor Laser Based THz Technology

2011 - Carsten Brenner, Martin R. Hofmann

CLEO, Baltimore, USA - invited

Passively mode-locked two section laser diode with intracavity dispersion control

2011 - Tobias Schlauch, Jan C. Balzer, Martin R. Hofmann , A. Klehr, G. Erbert, G. Tränkle

SPIE Photonics West (OPTO), [7937-27] S.79370S-1-79370S-7, (2011)

Passively mode-locked two section laser diode with intracavity dispersion control

2011 - Tobias Schlauch, Jan C. Balzer, Martin R. Hofmann , A. Klehr, G. Erbert, G. Tränkle

SPIE Photonics West (OPTO), San Francisco (2011)

High modal gain in Ga(NAsP)/(BGa)((As)P) heterostructures grown lattice-matched on (001) silicon

2011 - Nektarios Koukourakis, Dominic A. Funke, Nils C. Gerhardt, Martin R. Hofmann , S. Liebich, S. Zinnkann, M. Zimprich, A. Beyer, S. Chatterjee, C. Bückers, S. W. Koch, K. Volz, W. Stolz, B. Kunert

SPIE Photonics West (OPTO), San Francisco (2011), [7939-79]

Substance Identification in Spectroscopic Optical Coherence Tomograhpy Using Pattern Recognition

2010 - Volker Jaedicke, Christoph Kasseck, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

in Frontiers in Optics, OSA Technical Digest (CD) (Optical Society of America, 2010), paper FTuY2

Spectral pattern classification in optical coherence tomography

2010 - H. Welp, Volker Jaedicke, Christoph Kasseck, Nils C. Gerhardt, Martin R. Hofmann

55th IWK 2010, Ilmenau, Germany

Femtosecond passively modelocked diode laser with intracavity dispersion management

2010 - Tobias Schlauch, Jan C. Balzer, A. Klehr, G. Erbert, G. Tränkle, Martin R. Hofmann

Opt. Express 18, 24316-24324

Compact diode laser based system for continuous wave and quasi time domain THz spectroscopy

2010 - Carsten Brenner, Martin R. Hofmann , M. Scheller, M. K. Shakfa, M. Koch, I. Camara Mayorga, A. Klehr, G. Erbert, G. Tränkle

Opt. Lett. Vol. 35, Iss. 23, pp. 3859-3861

Spectral pattern classification in optical coherence tomography

2010 - H. Welp, Volker Jaedicke, Christoph Kasseck, Nils C. Gerhardt, Martin R. Hofmann

Proc. 55th IWK, 737-543 (2010)

Birefringence controlled room-temperature picosecond spin dynamics close to the threshold of vertical-cavity surface-emitting laser devices

2010 - Mingyuan Li, Hendrik Jähme, Henning Höpfner, Nils C. Gerhardt, Martin R. Hofmann , T. Ackemann

Appl. Phys. Lett. 97, 191114

Gigahertz Circular Polarization Oscillations in Spin-Polarized Vertical-Cavity Surface-Emitting Lasers

2010 - Nils C. Gerhardt, Mingyuan Li, Hendrik Jähme, Martin R. Hofmann , T. Ackemann

NOEKS 2010, Paderborn, Germany

Laser gain in dilute nitride semiconductor quantum well systems – a microscopic analysis

2010 - C. Bückers, S.W. Koch, J. Hader, J.V. Moloney, B. Kunert, S. Liebich, K. Volz, W. Stolz, Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann

ICOOPMA, Budapest, Hungary

Intracavity dispersion control of a passively modelocked semiconductor laser in an external Fourier transform cavity

2010 - Jan C. Balzer, Tobias Schlauch, Martin R. Hofmann , A. Klehr, G. Ebert

EPS-QEOD Europhoton, Hamburg, Germany

Monospectral Photoacoustic Imaging using Legendre Sequences

2010 - Martin F. Beckmann, Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc IEEE In­ter­na­tio­nal Ul­tra­so­nics Sym­po­si­um, 2010, pp. 386 - 389 doi:10.1109/ULTSYM.2010.5935648

Optical gain in Ga(NAsP)/(BGa)((As)P) heterostructures pseudomorphically grown on Si(001) substrate

2010 - Nils C. Gerhardt, Nektarios Koukourakis, Dominic A. Funke, Martin R. Hofmann , S. Liebich, S. Zinnkann, M. Zimprich, S. Chatterjee, K. Volz, W. Stolz

E-MRS Spring Meeting, Strasbourg, France

Properties of Spin.Optoelectronic-Devices

2010 - Nils C. Gerhardt, Mingyuan Li, Henning Höpfner, Stephan Hövel, Carsten Brenner, Martin R. Hofmann , A. Ludwig, F.-Y. Lo, D. Reuter, A. Wieck, A. Ebbing, K. Westerholt, H. Zabel, E. Schuster, F. Stromberg, H. Wende, W. Keune, T. Ackemann

Tutorial, Workshop on New Materials – New Functionalities, Marburg, Germany – Invited

Substance identification by depth resolved spectroscopic pattern reconstruction in frequency domain optical coherence tomography

2010 - Christoph Kasseck, Volker Jaedicke, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Optics Communications (2010) (Volume 283, Issue 23, 1 December 2010, Pages 4816-4822)

Monospectral Photoacoustic Imaging using Legendre Sequences

2010 - Martin F. Beckmann, Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann

2010 IEEE Ultrasonics Symposium (IUS) , San Diego, CA, USA, 2010

Photorefractive Two-Wave Mixing for Image Amplification in Digital Holography

2010 - Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann , Ryan Yiu Wai Lai

OSA Conference paper FThBB5

Spectroscopic image analysis with pattern recognition in frequency domain optical coherence tomography

2010 - Volker Jaedicke, Christoph Kasseck, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

OSA Biomedical Optics Conference 2010, Miami, Florida, USA

Substance identification in spectroscopic optical coherence tomograhpy using pattern recognition

2010 - Volker Jaedicke, Christoph Kasseck, Nils C. Gerhardt, Hubert Welp, Martin R. Hofmann

Frontiers in Optics, Rochester, NY, USA

Modal Gain analysis of GaNAsP Heterostructures on Silicon

2010 - Nektarios Koukourakis, Dominic A. Funke, Nils C. Gerhardt, Martin R. Hofmann , Bernardette Kunert, Sven Liebich, S. Zinnkann, M. Zimprich, A. Beyer, S. Chatterjee, C. Bückers, S. W. Koch, K. Volz, W. Stolz

OSA conference paper JWA56 (2010)

Integrity of micro-hotplates during high-temperature operation monitored by digital holographic microscopy

2010 - Ryan Yiu Wai Lai, Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann , R. Meyer, S. Hamann, M. Ehmann, K. Hackl, E. Darakis, A. Ludwig

IEEE/ASME Journal of Microelectromechanical Systems 4, 1-5, Vol. 19, No. 5, p. 1175

Epitaxial Growth and Interfacial Magnetism of Spin Aligner for Remanent Spin Injection: [Fe/Tb]n/Fe/MgO/GaAs-LED as a Prototype System

2010 - E. Schuster, R. A. Brand, F. Stromberg, F.-Y. Lo, D. Reuter, A. D. Wieck, Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , H. Wende, W. Keune

J. Appl. Phys, 108, 063902

Comparison of optical coherence tomography, micro computed tomography and histology at a three-dimensionally imaged trabecular bone sample

2010 - Christoph Kasseck, Marita Kratz, Antonia Torcasio, Nils C. Gerhardt, G. Harry van Lenthe, Thilo Gambichler, Klaus Hoffmann, David B. Jones, Martin R. Hofmann

Journal of Biomedical Optics, 15(4), 046019

New concepts for continuous wave and quasi time domain THz systems

2010 - Carsten Brenner, Martin R. Hofmann

EOSAM, Paris, France

Spectroscopic Image Analysis with Pattern Recognition in Frequency Domain Optical Coherence Tomography

2010 - Volker Jaedicke, Christoph Kasseck, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

in Biomedical Optics, OSA Technical Digest (CD) (Optical Society of America, 2010), paper BSuD8

Electrical Spin injection in InAs Quantum Dots from a Ferromagnetic Contact in Remanence at Room Temperature and Adjustment of the Emission Wavelength for Spintronic Applications

2010 - A. Ludwig, R. Roescu, A.K. Rai, K. Trunov, Mingyuan Li, Henning Höpfner, F. Stromberg, A. Ebbing, Nils C. Gerhardt, Martin R. Hofmann , H. Wende, D. Reuter, A.D. Wieck

The 16th International Conference on MBE, Berlin (2010)

Cost-effective THz spectroscopy with continuous-wave laser sources

2010 - Martin R. Hofmann , M. Scheller, Carsten Brenner, K. Baaske, M. Koch

EUCAP 2010, Barcelona, Spain, April (invited)

Depth resolved substance identification using pattern recognition in spectroscopic frequency domain optical coherence tomography

2010 - Volker Jaedicke, Christoph Kasseck, Nils C. Gerhardt, Martin R. Hofmann

Jahrestagung der DGBMT und 3-Länder-Tagung D-A-CH Rostock, Germany

Modal Gain analysis of GaNAsP Heterostructures on Silicon

2010 - Nektarios Koukourakis, Dominic A. Funke, Nils C. Gerhardt, Martin R. Hofmann , Bernardette Kunert, Sven Liebich, S. Zinnkann, M. Zimprich, A. Beyer, S. Chatterjee, C. Bückers, S. W. Koch, K. Volz, W. Stolz

OSA Frontiers in Optics, Rochester

Photorefractive Two-Wave Mixing for Image Amplification in Digital Holography

2010 - Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann , Ryan Yiu Wai Lai

OSA Frontiers in Optics, Rochester

Compact High-Power Ho:YAG MOPA in-Band Pumped by Laser Diode Stacks at 1.9 micron

2010 - Samir Lamrini, Martin R. Hofmann , K. Scholle, P. Koopmann, P. Fuhrberg

In Proceedings of EPS-QEOD Europhoton Conference 2010, # WeC5

Laser Operation at 2 micron and Thermal Conductivity of Thulium Doped Lutetia

2010 - P. Koopmann, Samir Lamrini, K. Scholle, P. Fuhrberg, K. Petermann, G. Huber

In Proceedings of EPS-QEOD Europhoton Conference 2010, # WeP2 (2010)

High Power Diode Pumped 2 µm Laser Operation of Tm:Lu2O3

2010 - P. Koopmann, Samir Lamrini, K. Scholle, P. Fuhrberg, K. Petermann, G. Huber

In Proceedings of CLEO/QUELS 2010, # CMDD1 (2010)

Frontiers in Guided Wave Optics and Optoelectronics

2010 - K. Scholle, Samir Lamrini, P. Koopmann, P. Fuhrberg

InTech, Vukovar, 2010, pp. 471–500

High-Power Ho:YAG Laser in-Band Pumped by Laser Diodes at 1.9 µm and Wavelength-Stabilized by a Volume Bragg Grating

2010 - Samir Lamrini, P. Koopmann, K. Scholle, P. Fuhrberg, Martin R. Hofmann

In Proceedings of Advanced Solid State Photonics 2010, # AMB13 (2010)

Diode laser based THZ homodyne system for cw and quasi time domain spectroscopy

2010 - Carsten Brenner, Martin R. Hofmann , M. Scheller, M. K. Shakfa, M. Koch, A. Klehr, G. Erbert

Laser Optics Berlin, Berlin, Germany

Frequency domain optical coherence tomography with subsequent depth resolved spectroscopic image analysis

2010 - Christoph Kasseck, Volker Jaedicke, Nils C. Gerhardt, Hubert Welp, Martin R. Hofmann

SPIE Photonics West (BIOS), San Francisco, CA, USA

Frequency domain optical coherence tomography with subsequent depth resolved spectroscopic image analysis

2010 - Christoph Kasseck, Volker Jaedicke, Nils C. Gerhardt, H. Welp, Martin R. Hofmann

Proc. SPIE 7554, 75542T (2010), DOI:10.1117/12.840029

Lasing and gain characteristics in Ga(NAsP) heterostructures on Si

2010 - C. Lange, S. Chatterjee, W.W. Rühle, Nektarios Koukourakis, Nils C. Gerhardt, Martin R. Hofmann , S. Liebich, M. Zimprich, R. Fritz, B. Kunert, K. Volz, W. Stolz

SPIE Photonics West, San Francisco, California, USA

Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices, SPIE Photonics West

2010 - Nils C. Gerhardt, Mingyuan Li, Hendrik Jähme, Henning Höpfner, Martin R. Hofmann , T. Ackemann

San Francisco, California, USA

Novel Semiconductor Based Laser Systems and Devices

2010 - Nils C. Gerhardt, Nektarios Koukourakis, Dominic A. Funke, Mingyuan Li, Henning Höpfner, Hendrik Jähme, Tobias Schlauch, Jan C. Balzer, Claus-Stefan Friedrich, Martin R. Hofmann

GAFOE Symposium, Oak Ridge, Tennessee, USA

Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices

2010 - Nils C. Gerhardt, Mingyuan Li, Hendrik Jähme, Henning Höpfner, Martin R. Hofmann , T. Ackemann

Proc. SPIE 7597, 75970Q

Electro-optical modulator arrays for the ultra-fast spectral tuning of external-cavity diode lasers

2010 - Hendrik Jähme, Nils C. Gerhardt, Martin R. Hofmann , Mike Bülters, Dieter Jäger

SIOE, Cardiff, UK

Experimental Evaluation of Photoacoustic Coded Excitation using Unipolar Golay Codes

2010 - Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, Wilko Wilkening, Martin R. Hofmann , Georg Schmitz

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol 57 (7) 2010, pp 1583-1593

Multispectral photoacoustic coded excitation imaging using unipolar orthogonal Golay codes

2010 - Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin F. Beckmann, Martin Schiffner, Martin R. Hofmann , Georg Schmitz

Optics Express, 2010, vol. 18, pp. 9076-9087, DOI: 10.1364/OE.18.009076

THz sources and detectors based on diode lasers

2009 - Claus-Stefan Friedrich, Carsten Brenner, Stefan Hoffmann, Tobias Schlauch, Andreas Klehr, Götz Erbert, Günther Tränkle, Christian Jördens, Mohammed Salhi, Martin Koch, Martin R. Hofmann

Proc. SPIE 7197, 71970B (invited)

Compact semiconductor laser sources for photoacoustic imaging

2009 - Claus-Stefan Friedrich, Mona-Carina Wawreczko, Martin P. Mienkina, Nils C. Gerhardt, Georg Schmitz, Martin R. Hofmann

Proc. SPIE 7177, 71772H

Depth resolved holographic imaging with variable depth resolution

2009 - Nektarios Koukourakis, Michael Breede, Nils C. Gerhardt, Martin R. Hofmann , S. Köber, M. Salvador, K. Meerholz

Electronics Letters, January 2009, Volume 45, Issue 1, p. 46-48

THz sources and detectors based on diode lasers

2009 - Claus-Stefan Friedrich, Carsten Brenner, Stefan Hoffmann, Tobias Schlauch, Andreas Klehr, Götz Erbert, Günther Tränkle, Christian Jördens, Mohammed Salhi, Martin Koch, Martin R. Hofmann

SPIE Photonics West, San Jose, California, USA (invited)

Compact semiconductor laser sources for photoacoustic imaging

2009 - Claus-Stefan Friedrich, Mona-Carina Wawreczko, Martin P. Mienkina, Nils C. Gerhardt, Georg Schmitz, Martin R. Hofmann

SPIE Photonics West, San Jose, California, USA

Spin-controlled optoelectronic devices

2009 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A. D. Wieck, E. Schuster, H. Wende, W. Keune

phys. stat. sol C2, 436

Optical Coherence Tomography versus Micro Computer Tomography

2009 - Christoph Kasseck, Marita Kratz, Antonia Torcasio, Nils C. Gerhardt, G. Harry van Lenthe, Thilo Gambichler, Klaus Hoffmann, David B. Jones, Martin R. Hofmann

SPIE Europe, European Conference on Biomedical Optics, Munich, Germany (accepted)

New Concepts for Depth Resolved Holographic Imaging Based on Spectrally Tunable Diode Lasers

2009 - Nektarios Koukourakis, Christoph Kasseck, Nils C. Gerhardt, Martin R. Hofmann , Daniel Rytz, Sebastian Koeber, Michael Salvador, Klaus Meerholz

OSA, CLEO/IQEC, Baltimore, Maryland, USA

Semiconductor laser based THz generation and detection

2009 - Carsten Brenner, Stefan Hoffmann, Claus-Stefan Friedrich, Tobias Schlauch, A. Klehr, G. Erbert, G. Tränkle, C. Jördens, M. Salhi, M. Koch, Martin R. Hofmann

phys. stat. sol. C6, 564

New Concepts for Depth Resolved Holographic Imaging

2009 - Nektarios Koukourakis, Christoph Kasseck, Nils C. Gerhardt, Martin R. Hofmann , Daniel Rytz, Sebastian Koeber, Michael Salvador, Klaus Meerholz

OSA Spring Optics & Photonics Congress, Vancouver, BC, Canada (accepted)

Wavelength Stabilization and Mode Selection of a GaSb-based Semiconductor Disk Laser at 2 um Using a Volume Bragg Grating

2009 - K. Scholle, Samir Lamrini, P. Fuhrberg, M. Rattunde, J. Wagner

In Proceedings of CLEO Europe – EQEC 2009, #CB7_4 (2009)

Gain characteristics and lasing of Ga(NAsP) multi-quantum well structures

2009 - C. Lange, S. Chatterjee, B. Kunert, K. Volz, W. Stolz, W.W. Rühle, Nils C. Gerhardt, Martin R. Hofmann

phys. stat. sol. C6, 576

Lasing in Optically pumped Ga(NAsP)/(BGa)(AsP) Heterostructures on Silicon

2009 - C. Lange, N.S. Köster, D.J. Franzbach, S. Chatterjee, W.W. Rühle, S. Zinnkann, S. Liebich, I. Nemeth, R. Fritz, K. Volz, W. Stolz, B. Kunert, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

OSA, CLEO/IQEC, Baltimore, Maryland, USA

Lasing of lattice-matched Ga(NAsP) quantum well heterostructures monolithically integrated on (001) Si substrate

2009 - B. Kunert, I. Németh, S. Zinnkann, G. Lukin, R. Fritz, K. Volz, W. Stolz, C. Lange, N.S. Koester, D.J. Franzbach, S. Chatterjee, W. Rühle, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

SPIE Photonics West, San Jose, California, USA

Versatile THz Homodyn System based on an amplified laser diode in an external cavity

2009 - Carsten Brenner, Martin R. Hofmann , M. K. Shakfa, M. Scheller, M. Koch, A. Klehr, G. Erbert

TeraTech, Osaka, Japan

Three-dimensional Bone Imaging: Optical Coherence Tomography versus Micro Computer Tomography

2009 - Christoph Kasseck, Marita Kratz, Antonia Torcasio, Nils C. Gerhardt, G. Harry van Lenthe, Thilo Gambichler, Klaus Hoffmann, David B. Jones, Martin R. Hofmann

SPIE Proceedings 7372-31

Laser operation of III/V compound material Ga(NAsP) grown lattice-matched on (001) Si substrate

2009 - B. Kunert, S. Liebich, S. Zinnkann, I. Németh, R. Fritz, K. Volz, W. Stolz, C. Lange, N.S. Koester, D.J. Franzbach, S. Chatterjee, W. Rühle, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

Device Research Conference, The Pennsylvania State University, University Park, USA

New Concepts for Depth Resolved Holographic Imaging Based on Spectrally Tunable Diode Lasers

2009 - Nektarios Koukourakis, Christoph Kasseck, Nils C. Gerhardt, Martin R. Hofmann , Daniel Rytz, Sebastian Koeber, Michael Salvador, Klaus Meerholz

OSA Conference paper CTuAA2

Lasing of the III/V compound semiconductor Ga(NAsP) integrated lattice-matched to Si substrate

2009 - B. Kunert, S. Liebich, M. Zimprich, R. Fritz, K. Volz, W. Stolz, C. Lange, N.S. Koester, S. Chatterjee, W. Rühle, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

6th International Conference on Group IV Photonics (GFP), San Francisco, USA

Ultrafast Spin Dynamics in Spin-Polarized Vertical-Cavity Surface-Emitting Laser Devices

2009 - Nils C. Gerhardt, Stephan Hövel, Mingyuan Li, Hendrik Jähme, Martin R. Hofmann , T. Ackemann, A. Kroner, R. Michalzik

OSA, CLEO/IQEC, Baltimore, Maryland, USA (2009)

Spin dynamics in vertical-cavity surface-emitting lasers at room temperature

2009 - Mingyuan Li, Hendrik Jähme, Stephan Hövel, Andreas Bischoff, Nils C. Gerhardt, Martin R. Hofmann

SIOE, Cardiff, UK

New Concepts for Depth Resolved Holographic Imaging

2009 - Nektarios Koukourakis, Christoph Kasseck, Nils C. Gerhardt, Martin R. Hofmann , Daniel Rytz, Sebastian Köber, Michael Salvador, Klaus Meerholz

OSA Conference paper DMB6

Spin-relaxation measurements in VCSEL-structures at room temperature

2009 - Hendrik Jähme, Mingyuan Li, Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann

DPG Spring Meeting of the Condensed Matter Section, Dresden

Nanosecond Switching and Wavelength Tuning of External Cavity Laser Diode Using a Reflective Electro Absorption Modulator

2009 - M. Bülters, Michael Breede, Martin R. Hofmann , D. Jäger

Photonics Technology Letters

Feasibility Study of Multispectral Photoacoustic Coded Excitation using Orthogonal Unipolar Golay Codes

2009 - Martin P. Mienkina, Eder A., Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Ultrasonics Symposium (IUS), 2009 IEEE International , pp.108-111, 20-23 Sept. 2009

Multispectral Photoacoustic Coded Excitation using Orthogonal Unipolar Golay Codes

2009 - Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc IFMBE, vol 25/II, 2009, pp 217-220

Experimental evaluation of multispectral photoacoustic coded excitation using orthogonal unipolar golay codes

2009 - Martin P. Mienkina, Eder A., Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

442. Heraeus-Seminar "Molecular Imaging", Bad Honnef, Germany

Evaluation of Ferucarbotran (Resovist ®) as a Photoacoustic Contrast Agent

2009 - Martin P. Mienkina, Claus-Stefan Friedrich, Karin Hensel, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Biomedical Engineering, vol 54, 2009, pp 83-88

Comparison of Coding Techniques for Photoacoustic Coded Excitation

2009 - Martin P. Mienkina, Eder A., Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

International Conference on Acoustics (NAG/DAGA), 2009, pp 313-316

Single-shot holography for depth resolved three dimensional imaging

2009 - Nektarios Koukourakis, Christoph Kasseck, D. Rytz, Nils C. Gerhardt, Martin R. Hofmann

Optics Express, Vol. 17 Issue 23, pp.21015-21029

Evaluation of Ferucarbotran (Resovist®) as a photoacoustic contrast agent

2009 - Martin P. Mienkina, Claus-Stefan Friedrich, Karin Hensel, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Biomedical Engineering, vol 54, 2009, pp 83-88

Feasibility study of multispectral photoacoustic coded excitation using orthogonal unipolar Golay codes

2009 - Martin P. Mienkina, Annika Eder, Georg Schmitz, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann

Proc IEEE International Ultrasonics Symposium, 2009, pp 108-111

Comparison of Coding Techniques for Photoacoustic Coded Excitation

2009 - Martin P. Mienkina, Annika Eder, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc International Conference on Acoustics (NAG/DAGA), 2009, pp 313-316

Multispectral Photoacoustic Coded Excitation using Orthogonal Unipolar Golay Codes

2009 - Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc IFMBE, vol 25/II, 2009, pp 217-220

All-semiconductor laser driven terahertz time-domain spectrometer

2008 - C. Jördens, Tobias Schlauch, Mingyuan Li, Martin R. Hofmann , M. Bieler, M. Koch

Applied Physics B-Lasers and Optics, Vol. 93, Issue 2-3, Special Issue: Sp. Iss. SI, pp. 515-520 (Nov 2008)

New two color laser concepts for THz-generation

2008 - Claus-Stefan Friedrich, Carsten Brenner, Stefan Hoffmann, A. Schmitz, I. C. Mayorga, A. Klehr, G. Erbert, Martin R. Hofmann

IEEE J. Sel. Top. Quant. 14, 270

Room-Temperature Spin-Controlled Optoelectronic Devices

2008 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A. D. Wieck, E. Schuster, W. Keune

CLEO, San Jose, USA

Ferromagnet/semiconductor heterostructures and spininjection

2008 - Martin R. Hofmann , M. Oestreich

Springer Tracts in Modern Physics 227, 335 (2008) ISSN: 0081-3869

Room-Temperature Spin-Optoelectronic Devices. Spin Phenomena in Reduced Dimensions

2008 - Mingyuan Li, Hendrik Jähme, Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , A. Ludwig, D. Reuter, A.D. Wieck, F. Stromberg, H. Wende, W. Keune

Regensburg, Deutschland

Optical spin manipulation of electrically pumped vertical-cavity surface-emitting lasers

2008 - Stephan Hövel, Andreas Bischoff, Nils C. Gerhardt, Martin R. Hofmann , T. Ackemann, A. Kroner, R. Michalzik

Appl. Phys. Lett. 92, 041118

Fast control of an external-cavity laser diode using a vertical pin modulator

2008 - M. Bülters, Michael Breede, Martin R. Hofmann , D. Jäger

EOS Annual Meeting, Paris, France

Lasing of lattice-matched Ga(NAsP) quantum well heterostructures monolithically integrated on (001) Si substrate

2008 - B. Kunert, I. Németh, S. Zinnkann, G. Lukin, T.B. Adams, R. Fritz, K. Volz, W. Stolz, C. Lange, N.S. Koester, D.J. Franzbach, S. Chatterjee, W. Rühle, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

International Semiconductor Laser Conference (ISLC) San Diego, USA (2008)

Gain on Silicon: Monolithic integration of GaNAsP on Si

2008 - C. Lange, D. Franzbach, S. Chatterjee, W.W. Rühle, B. Kuhnert, I. Németh, S. Zinnkann, R. Fritz, G. Lukin, T.B. Adams, K. Volz, W. Stolz, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

NOEKS, Klink

Semiconductor-laser based THz-generation and detection

2008 - Carsten Brenner, Stefan Hoffmann, Claus-Stefan Friedrich, Martin R. Hofmann , M. Salhi, M. Koch

NOEKS, Klink (invited)

Spin-controlled optoelectronic devices

2008 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A. Wieck, E. Schuster, W. Keune

NOEKS, Klink

Monolithic integration of the novel GaP-based laser material Ga(NAsP) on (001) Si substrate without any dislocation formation

2008 - B. Kunert, I. Németh, S. Zinnkann, G. Lukin, T.B. Adams, R. Fritz, K. Volz, W. Stolz, C. Lange, S. Chatterjee, W. Rühle, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

E-MRS Spring Meeting, Strasbourg, France

Optical gain in Ga(NAsP)/(BGa)(AsP) multi-quantum-well heterostructures grown lattice-matched on (001) Silicon substrate

2008 - B. Kunert, I. Németh, S. Zinnkann, G. Lukin, T.B. Adams, R. Fritz, K. Volz, W. Stolz, C. Lange, N.S. Koester, D.J. Franzbach, S. Chatterjee, W. Rühle, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

Device Research Conference, University of California, Santa Barbara, USA

Interaction of Semiconductor Laser Dynamics with THz Radiation

2008 - Carsten Brenner, Stefan Hoffmann, Martin R. Hofmann

Adv. in Solid State Phys. 47, 179

Optical verification of gain in Ga(NAsP)/(BGa)(AsP) multi-quantum-well heterostructures monolithically grown lattice-matched on (001) silicon substrate

2008 - B. Kunert, I. Németh, S. Zinnkann, G. Lukin, T.B. Adams, R. Fritz, K. Volz, W. Stolz, C. Lange, N.S. Koester, D.J. Franzbach, S. Chatterjee, W. Rühle, Nils C. Gerhardt, Nektarios Koukourakis, Martin R. Hofmann

International Symposium on Compound Semiconductors (ISCS) Europa-Park, Rust, Germany

High peak power femtosecond pulses from a mode-locked semiconductor laser in an external cavity

2008 - Tobias Schlauch, Mingyuan Li, Martin R. Hofmann , A. Klehr, G. Erbert, G. Tränkle

Electron. Lett., Vo. 44, Issue 11, pp. 678-679 (May 2008)

Electrical detection of photoinduced spins both at room temperature and in remanence

2008 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A.D. Wieck, E. Schuster, W. Keune, H. Wende, O. Petracic, K. Westerholt

Appl. Phys. Lett. 92, 242102

Room temperature electrical spin injection in remanence

2008 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , F.-Y. Lo, A. Ludwig, D. Reuter, A. D. Wieck, E. Schuster, H. Wende, W. Keune, O. Petracic, K. Westerholt

Appl. Phys. Lett. 93, 021117

Evaluation of Simplex Codes for Photoacoustic Coded Excitation

2008 - Martin P. Mienkina, Eder A., Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc IFMBE, vol 22, pp 444-447

Simulation Study of Photoacoustic Coded Excitation using Golay Codes

2008 - Martin P. Mienkina, Eder A., Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc IEEE International Ultrasonics Symposium, 1242-1245

Evaluation of Simplex Codes for Photoacoustic Coded Excitation

2008 - Martin P. Mienkina, Annika Eder, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann , Georg Schmitz

Proc. IFMBE, vol 22, 2008, pp 444-447

Simulation Study of Photoacoustic Coded Excitation using Golay Codes

2008 - Martin P. Mienkina, Annika Eder, Georg Schmitz, Claus-Stefan Friedrich, Nils C. Gerhardt, Martin R. Hofmann

Proc. IEEE International Ultrasonics Symposium, 2008, 1242-1245

An optical evaluation of the phenomenon of red out in neuroendoscopic surgery: what is the physical background?

2007 - M. Scholz, Martin R. Hofmann , Michael Breede, I. Pechlivanis, M. Engelhardt, K. Schmieder, W. Konen, A. G. Harders

Child's Nervous System 23, 73

Generation and Detection of THz radiation with diode lasers

2007 - Carsten Brenner, Stefan Hoffmann, Martin R. Hofmann

SIOE, Cardiff, Wales

Spin-controlled LEDs and VCSELs

2007 - Stephan Hövel, Nils C. Gerhardt, Carsten Brenner, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A.D. Wieck, E. Schuster, W. Keune

Phys. Stat. Sol. A 204, 500

Generation of Terahertz radiation with two color semiconductor lasers

2007 - Stefan Hoffmann, Martin R. Hofmann

Laser & Photon. Rev. 1, 44 (2007) - invited

Interaction of THz radiation with semiconductor lasers

2007 - Stefan Hoffmann, Martin R. Hofmann , Carsten Brenner, M. A. Salhi, M. Koch

Photonics West SPIE, San Jose, USA (invited)

Micromirror device controlled tunable diode laser

2007 - Michael Breede, Christoph Kasseck, Carsten Brenner, Nils C. Gerhardt, Martin R. Hofmann , R. Höfling

Electron. Lett. 43, 456

Validation of optical coherence tomography in vivo using cryostat histology

2007 - T. Gambichler, G. Moussa, P. Regeniter, Christoph Kasseck, Martin R. Hofmann , F. G. Bechara, M. Sand, P. Altmeyer, K. Hoffmann

Physics in Medicine and Biology 52, N75

Diode laser based THz technology

2007 - Martin R. Hofmann

International Bunsen Discussion Meeting: Exploring THz Spectroscopy: Technology and Applications in the Field of Dynamics and Nanostructures, Bad Honnef, Germany (invited)

Detection of THz radiation with diode lasers

2007 - Carsten Brenner, Stefan Hoffmann, Martin R. Hofmann , M. Salhi, M. Koch, A. Klehr, G. Erbert, G. Tränkle

Electron. Lett. 43, 870

Interaction of semiconductor laser dynamics with THz radiation

2007 - Martin R. Hofmann

DPG, Symposium THz interactions, Regensburg, Germany (invited)

Detection of THz radiation with semiconductor diode lasers

2007 - Carsten Brenner, Stefan Hoffmann, Martin R. Hofmann , M. Salhi, M. Koch, A. Klehr, G. Erbert, G. Tränkle, J.T. Steiner, M. Kira, S.W. Koch

Appl. Phys. Lett. 91, 101107

Photoacoustic Imaging of Fibrosarcoma using RGD-Cy 3 as a Targeted Contrast Agent

2007 - Martin P. Mienkina, Claus-Stefan Friedrich, Nils C. Gerhardt, J. Waldeck, Karin Hensel, C. Bremer, Martin R. Hofmann , Georg Schmitz

Proc IEEE International Ultrasonics Symposium 0, 2409

Spectroscopic Fourier Domain Optical Coherence Tomography

2007 - Christoph Kasseck, Kirsten Lehmann, Nils C. Gerhardt, Martin R. Hofmann

SPIE Europe, European Conference on Biomedical Optics, Munich, Germany

Evaluation eines kommerziellen Ultraschallgeräts für den Einsatz im photoakustischen Reflexionsmodus

2007 - Martin P. Mienkina, Nils C. Gerhardt, J. Waldeck, Michael Breede, C. Bremer, Martin R. Hofmann , Georg Schmitz

Biomedizinische Technik 52, G2-1

Spectroscopic Fourier Domain Optical Coherence Tomography

2007 - Christoph Kasseck, Kirsten Lehmann, Nils C. Gerhardt, Martin R. Hofmann

SPIE Proceedings 6627-67

External-cavity diode laser utilizing a micromirror device for spectral tuning

2007 - Michael Breede, Christoph Kasseck, Carsten Brenner, Nils C. Gerhardt, R. Höfling, Martin R. Hofmann

SPIE Europe, Optical Metrology, Munich, Germany

Vertical pin-modulator for controlling an external-cavity diode laser

2007 - Bülters, M., Michael Breede, Martin R. Hofmann , D. Jäger

IEEE Photonics and Microsystems 2007, International Students and Young Scientists, Conference Proceedings, Dresden, Germany, pp. 11-14

The variable stripe-length method revisited: Improved analysis

2007 - C. Lange, M. Schwalm, S. Chatterjee, W. W. Rühle, Nils C. Gerhardt, S. R. Johnson, J.-B. Wang, Y.-H. Zhang

Appl. Phys. Lett. 91, 191107

External-cavitydiode laser utilizing a micromirror device for spectral tuning

2007 - Michael Breede, Christoph Kasseck, Carsten Brenner, Nils C. Gerhardt, R. Höfling, Martin R. Hofmann

Proc SPIE 6616, 66160R

THz generation with Two-color semiconductor laser

2007 - Stefan Hoffmann, Martin R. Hofmann

Laser and Photon. Rev.: Jg. 1, H. 1, S. 44-56

Evaluation eines kommerziellen Ultraschallgeräts für den Einsatz im photoakustischen Reflexionsmodus

2007 - Martin P. Mienkina, Nils C. Gerhardt, Jens Waldeck, Michael Breede, Christoph Bremer, Martin R. Hofmann , Georg Schmitz

Biomedical Engineering, Vol 52 (2007, Suppl), G2-1

Photoacoustic Imaging of Fibrosarcoma using RGD-Cy 3 as a Targeted Contrast Agent

2007 - Martin P. Mienkina, Claus-Stefan Friedrich, Jens Waldeck, Karin Hensel, Nils C. Gerhardt, C. Bremer, Martin R. Hofmann , Georg Schmitz

Proc. IEEE International Ultrasonics Symposium, 2007, pp 2409-2412

Enhancement of spin information with vertical cavity surface emitting lasers

2006 - Nils C. Gerhardt, Stephan Hövel, Martin R. Hofmann , J. Yang, D. Reuter, A. Wieck

Electronics Letters 42, 88

Spin injection light-emitting diode with vertically magnetized ferromagnetic metal contacts

2006 - Nils C. Gerhardt, Stephan Hövel, Carsten Brenner, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A.D. Wieck, E. Schuster, W. Keune, S. Halm, G. Bacher, K. Westerholt

Journal of Applied Physics 99, 073907-1

Spin-controlled vertical cavity surface-emitting lasers

2006 - Stephan Hövel, Nils C. Gerhardt, Carsten Brenner, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A. D. Wieck, E. Schuster, W. Keune

Photonics Europe, Strasbourg, France (invited)

Room-temperature terahertz generation with semiconductor lasers

2006 - Carsten Brenner, Tuyen N. Le, Stefan Hoffmann, Martin R. Hofmann

Photonics Europe, Strasbourg, France

Bandwith limitations of two-colour diode lasers for direct terahertz emission

2006 - Stefan Hoffmann, Xiao Luo, Martin R. Hofmann

Electron. Lett. 42, 696

Room-temperature Terahertz detection with diode lasers

2006 - Carsten Brenner, Stefan Hoffmann, Martin R. Hofmann , M. Salhi, M. Koch

CLEO/QELS, Long Beach, USA

Vorrichtung und Verfahren zur Erzeugung von kohärenter Terahertz-Strahlung

2006 - Tränkle, G., Ebert, G., Klehr, A., Martin R. Hofmann

DE 10 2006 041 728 B4, Patenterteilung 08.04.2010

Zeitaufgelöste Holographie für biomedizinische Bildgebung

2006 - Martin Breede, Michael Breede, Martin R. Hofmann , M. Salvador, S. Köber, K. Meerholz

107. Jahrestagung der DGaO, Weingarten

Room temperature terahertz generation with semiconductor lasers

2006 - Carsten Brenner, Tuyen N. Le, Stefan Hoffmann, Martin R. Hofmann

Proc. SPIE 6194, 61940H

Spin-controlled LEDs and VCSELs

2006 - Stephan Hövel, Nils C. Gerhardt, Carsten Brenner, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A. Wieck, E. Schuster, W. Keune

ICSNN, Istanbul, Turkey (invited)

Zeitaufgelöste Holographie für biomedizinische Bildgebung

2006 - Michael Breede, Martin Breede, Martin R. Hofmann , M.Salvador, S.Köber, K.Meerholz

DGaO-Proceedings 107

Fourier transform external cavity lasers

2006 - Michael Breede, Stefan Hoffmann, Martin R. Hofmann

Symposium on Opto- and Microelectronic Devices and Circuits, Duisburg, Germany

Spin-controlled vertical cavity surface-emitting lasers

2006 - Stephan Hövel, Nils C. Gerhardt, Carsten Brenner, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A. D. Wieck, E. Schuster, W. Keune

Proc. SPIE 6184, 61840Y

Lasing in optically pumped Ga(NAsP)/GaP heterostructures

2006 - S. Borck, S. Chatterjee, B. Kunert, K. Volz, W. Stolz, J. Heber, W. W. Rühle, Nils C. Gerhardt, Martin R. Hofmann

Appl. Phys. Lett. 89, 031102

External cavity hybrid-mode-locked semiconductor laser with intracavity spatial light modulator for pulse compression

2006 - Tuyen N. Le, Michael Breede, Martin R. Hofmann , A. Klehr, G. Ebert

Semiconductor and integrated optoelectronics SIOE06, Cardiff, Wales

Experimental Characterization of Ferucarbotran as a Photoacoustic Contrast Agent

2006 - Martin P. Mienkina, Karin Hensel, Tuyen N. Le, Nils C. Gerhardt, Ch. Hansen, Martin R. Hofmann , Georg Schmitz

Proc IEEE International Ultrasonics Symposium 0, 393

Diode laser based THz radiation sources

2006 - Martin R. Hofmann , Carsten Brenner, Stefan Hoffmann, Tuyen N. Le

European Conference on nondestructive testing, ECNDT 2006, Berlin, Germany

Experimentelle Charakterisierung von Ferucarbotran als photoakustisches Kontrastmittel

2006 - Martin P. Mienkina, Karin Hensel, Tuyen N. Le, Nils C. Gerhardt, E. Bründermann, M. Havenith, Martin R. Hofmann , Georg Schmitz

Proc Gemeinsame Jahrestagung der Deutschen, Österreichischen und Schweizerischen Gesellschaften für Biomedizinische Technik 51, V180

Hybrid and passive mode-locking of a two-section laser diode in a Fourier transform external cavity

2006 - Tuyen N. Le, Martin R. Hofmann , A. Klehr, G.Erbert

IEE Proceedings Optoelectronics 153, 312

Experimental Characterization of Ferucarbotran (Resovist ®) as a Photoacoustic Nanoparticle Contrast Agent

2006 - Martin P. Mienkina, Karin Hensel, L. N. Tuyen, Nils C. Gerhardt, Christian Hansen, Martin R. Hofmann , Georg Schmitz

Proc IEEE International Ultrasonics Symposium, 2006, pp 393-396

Experimentelle Charakterisierung von Ferucarbotran als photoakustisches Kontrastmittel

2006 - Martin P. Mienkina, Karin Hensel, Tuyen N. Le, Nils C. Gerhardt, Ilona Kopf, Erik Bründermann, Martina Havenith, Martin R. Hofmann , Georg Schmitz

Biomedical Engineering, Vol 51 (2006 Suppl), V180

Two-color diode lasers for generation of THz radiation

2005 - Stefan Hoffmann, Martin R. Hofmann , M. Kira, S.W. Koch

Semiconductor Science and Technology 20, 205 (2005) - invited

Terahertz Generation with Two Color Diode Lasers

2005 - Stefan Hoffmann, Martin R. Hofmann

LEOS Annual Meeting, Sydney, Australia (invited)

Spin controlled optically pumped vertical cavity surface emitting laser

2005 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , J. Yang, D. Reuter, A. Wieck

Electronics Letters 41, 251

Erzeugung von Terahertzstrahlung mit Zwei-Farben-Halbleiterlasern

2005 - Stefan Hoffmann

Ruhr-Universität Bochum

Spin-controlled LEDs and VCSELs

2005 - Nils C. Gerhardt, Stephan Hövel, Carsten Brenner, Martin R. Hofmann , J. Yang, D. Reuter, A. D. Wieck

Proc. SPIE 5722, 221

Spin-controlled LEDs and VCSELs

2005 - Nils C. Gerhardt, Stephan Hövel, Carsten Brenner, Martin R. Hofmann , J. Yang, D. Reuter, A. D. Wieck

SPIE Photonics West, San Jose, California, USA

Electron spin injection into GaAs from ferromagnetic contacts in remanence

2005 - Nils C. Gerhardt, Stephan Hövel, Carsten Brenner, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A. D. Wieck, E. Schuster, W. Keune, K. Westerholt

Appl. Phys. Lett. 87, 032502

Elektrische Spininjektion über ferromagnetische Kontakte in LEDs im remanenten Zustand

2005 - Nils C. Gerhardt, Stephan Hövel, Martin R. Hofmann , F.-Y. Lo, D. Reuter, A.D. Wieck, E. Schuster, W. Keune

DPG Frühjahrstagung, Berlin, Germany (2005)

Spinabhängige Polarisation eines optisch gepumpten VCSELs

2005 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , J. Yang, D. Reuter, A.D. Wieck

DPG Frühjahrstagung, Berlin, Germany (2005)

Spin dependent polarisation of optically pumped VCSELs

2005 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , J. Yang, D. Reuter, A. D. Wieck

SIOE, Cardiff, Wales

Terahertz-Strahlung entgeht nichts

2005 - Stefan Hoffmann, Martin R. Hofmann

Rubin, Jg. 1/05, S. 42-48

Two-color semiconductor lasers

2004 - Stefan Hoffmann, Martin Breede, Martin R. Hofmann

SPIE Photonics West, San Jose, California, USA (invited)

Linewidth enhancement factor and optical gain in (GaIn)(NAs)/GaAs lasers

2004 - Nils C. Gerhardt, Martin R. Hofmann , J. Hader, J.V. Moloney, S.W. Koch, H. Riechert

Appl. Phys. Lett. 84, 1

Two-color semiconductor lasers

2004 - Stefan Hoffmann, Martin Breede, Martin R. Hofmann

Proc. SPIE 5349, 218 (2004) Physics and Simulation of Optoelectronic Devices XII

Four-wave mixing and direct terahertz emission with two-color semiconductor lasers

2004 - Stefan Hoffmann, Martin R. Hofmann , E. Bründermann, M. Havenith, M. Matus, J.V. Moloney, A.S. Moskalenko, M. Kira, S.W. Koch, S. Saito, K. Sakai

Appl. Phys. Lett. 84, 3585

THz Generation with Two-Color Semiconductor Laser

2004 - Stefan Hoffmann, Martin R. Hofmann

IRMMW, Karlsruhe

Gain and emission dynamics of (GaIn)(NAs) lasers

2004 - Martin R. Hofmann , Nils C. Gerhardt

2nd International Workshop on Metastable Compound Semiconductors and Heterostructures, Marburg, Germany

Herstellung und Charakterisierung optisch gepumpter, oberflächenemittierender Halbleiterlaser

2004 - Stephan Hövel, Nils C. Gerhardt, Martin R. Hofmann , J. Yang, D. Reuter, A.D. Wieck

DPG Frühjahrstagung, Regensburg, Germany (2004)

Dynamics of two-color laser systems with spectrally filtered feedback

2004 - M. Matus, M. Kolesik, J.V. Moloney, Martin R. Hofmann , S.W. Koch

J. Opt. Soc. Am. B 21, 1758

Two-color semiconductor lasers for generation of THz radiation

2004 - Stefan Hoffmann, Martin R. Hofmann

European Semiconductor Laser Workshop, Särö, Sweden

Experimental analysis of the optical gain and linewidth enhancement factor of GaInNAs/GaAs lasers

2004 - Nils C. Gerhardt, Martin R. Hofmann

J. Phys.: Condens. Matter 16, S3095 (2004) - invited

Rapid Changes in Traction Force of Primary Bovine Osteoblasts in Response to Mechanical Strain

2004 - T. Lautenschläger, S. Curtze, M. Dembo, Erk Mennenga-Klopp , D.B. Jones

Journal of Cell Science 0, (2004) submitted

Physics of semiconductor lasers

2004 - S.W. Koch, Martin R. Hofmann

Encyclopedia of Modern Optics, Academic Press, Lon 2, 502 (2004) eds. R.D. Guenther et al., Elsevier, Oxford

Optical spectroscopy of 1.3 µm (GaIn)(NAs)/GaAs lasers

2003 - Nils C. Gerhardt, Martin R. Hofmann , W.W. Rühle

IEEE Proceedings Optoelectronics 150, 45

Postgrowth nondestructive characterization of dilute-Nitride VCSELs using electroreflectance spectroscopy

2003 - S.A. Choulis, T.J.C. Hosea, S. Ghosh, P.J. Klar, Martin R. Hofmann

IEEE Photonics Technology Lett. 15, 1026

Gain and emission dynamics of dilute nitride quantum well lasers

2003 - Martin R. Hofmann , Nils C. Gerhardt

Annual Meeting Optical Society of America, Tucson, Arizona, USA (invited)

Optical gain and lasing in organic thin films

2003 - Michael Breede, D. Schneider, T. Riedl, E. Becker, T. Dobbertin, S. Hartmann, A. Kammoun, C. Schildknecht, H. Krautwald, H. Johannes, W. Kowalsky

ECOER Proceedings 0

Experimentelle Methoden zur Bestimmung der optischen Verstärkung von 1.3µm (GaIn)(NAs)/GaAs Halbleiterlasern

2003 - Nils C. Gerhardt, Martin R. Hofmann

DPG Frühjahrstagung, Dresden, Germany (2003)

Optical gain and lasing in organic thin films

2003 - Michael Breede, D. Schneider, T. Riedl, E. Becker, T. Dobbertin, S. Hartmann, A. Kammoun, C. Schildknecht, H. Krautwald, H. Johannes, W. Kowalsky

European Conference on Organic Electronics and Related Phenomena, Wye, United Kingdom

Dynamic Measurements of Osteoblast Mechanosensing

2003 - D.B. Jones, Erk Mennenga-Klopp , J. Leitsch, M. Hoberg, C. Westermann

European Cells and Materials 6, 6

Gain and emission dynamics of dilute nitride Gain quantum well lasers

2003 - Martin R. Hofmann , Nils C. Gerhardt

IEEE JOURNAL OF QUANTUM ELECTRONICS, Volume: 38 Issue: 2 Pages: 213-221 Published: FEB 2002

Tunable blue laser based on intracavity frequency doubling with a fan-structured periodically poled LiTaO3 crystal

2002 - J. Zimmermann, J. Struckmeier, Martin R. Hofmann , J.-P. Meyn

Opt. Lett. 27, 604

Dual-wavelength external-cavity fiber-laser

2002 - T. Kleine-Ostmann, P. Knobloch, R. Caspary, U. Unrau, Martin R. Hofmann , M. Koch

Electronics Letters 38, 309

Quantitative prediction of semiconductor laser characteristics based on low intensity photo luminescence measurtements

2002 - J. Hader, A.R. Zakharian, J.V. Moloney, T.R. Nelson, J.E. Ehret, K. Hantke, Martin R. Hofmann , S.W. Koch

IEEE Photon. Technol. 14, 762

Physics of semiconductor lasers

2002 - S.W. Koch, Martin R. Hofmann

Encyclopedia of Modern Optics, Academic Press, London 0

Semiconductor laser with simultaneous tunable dual wavelength emission

2002 - Martin Breede, T. Höner zu Siederdissen, Martin R. Hofmann , Stefan Hoffmann, J. Kovacs, J. Struckmeier, J. Zimmermann, T. Kleine-Ostmann, P. Knobloch, M. Koch

SPIE Photonics West, San Jose, USA

Semiconductor laser with simultaneous tunable dual wavelength emission

2002 - Martin Breede, T. Höner zu Siederdissen, Martin R. Hofmann , Stefan Hoffmann, J. Kovacs, J. Struckmeier, J. Zimmermann, T. Kleine-Ostmann, P. Knobloch, M. Koch

Proc. SPIE 4646, 439

Laserdioden-basierendes Terahertz-Imaging-System

2002 - Martin R. Hofmann , Stefan Hoffmann, T. Kleine-Ostmann, P. Knobloch, M. Koch

Photonik 34, 88

Fourier-Transform External Cavity lasers

2002 - Martin Breede, Stefan Hoffmann, J. Zimmermann, J. Struckmeier, Martin R. Hofmann , T. Kleine-Ostmann, P. Knobloch, M. Koch, J.P. Meyn, M. Matus, S.W. Koch, J.V. Moloney

Opt. Commun. 207, 261

Optical gain of 1.3 µm (GaIn)(NAs)/GaAs lasers: a comparison between theory and experiment

2002 - Nils C. Gerhardt, Martin R. Hofmann , W. Stolz, S.W. Koch, J. Hader, J.V. Moloney, A. Yu. Egorov, H. Riechert

SIOE, Cardiff, Wales

Interband transitions of quantum wells and device structures containing Ga(N,As) and (Ga,In)(N,As)

2002 - P.J. Klar, H. Grüning, W. Heimbrodt, G. Weiser, J. Koch, K. Volz, W. Stolz, S.W. Koch, S. Tomic, S.A. Choulis, T.J.C. Hosea, E.P. O'Reilly, Martin R. Hofmann , J. Hader, J.V. Moloney

Sem. Science and Technol. 17, 830

Semiconductor quantum-well designer active materials

2002 - J. Hader, A.R. Zakharian, J.V. Moloney, T.R. Nelson, W.J. Siskanietz, J.E. Ehret, K. Hantke, S.W. Koch, Martin R. Hofmann

Optics & Photonics News 13

Coulomb correlations and biexciton structures in coherent excitation spectroscopy on semiconductor quantum wells

2002 - E. Finger, S. Kraft, Martin R. Hofmann , T. Meier, S.W. Koch, W. Stolz, W.W. Rhle, A. Wieck

phys. stat. sol. (b) 234, 414

Compact and cost-effective continuous wave THz imaging system

2002 - T. Kleine-Ostmann, P. Knobloch, M. Koch, Stefan Hoffmann, Martin R. Hofmann , G. Hein, K. Pierz

CLEO/QELS, Long Beach, USA

Optical gain of 1.3 µm (GaIn)(NAs)/GaAs lasers

2002 - Nils C. Gerhardt, Martin R. Hofmann

International Research Workshop on The Physics and Technology of Dilute Nitrides for Optical Communications, Istanbul, Türkei (invited)

Medical THz imaging: an investigation of histo-pathological samples

2002 - P. Knobloch, C. Schildknecht, T. Kleine-Ostmann, M. Koch, Stefan Hoffmann, Martin R. Hofmann , E. Rehberg, M. Sperling, K. Donhuijsen, G. Hein, K. Pierz

Phys. Med. Biol. 47, 3875

Dual-wavelength external-cavity diode laser for CW-THz generation

2002 - Martin Breede, Stefan Hoffmann, Martin R. Hofmann , T. Kleine-Ostmann, P. Knobloch, M. Koch

Nefertiti international workshop, Duisburg

Emission dynamics and optical gain of 1.3 µm (GaIn)(NAs)/GaAs lasers

2002 - Martin R. Hofmann , Nils C. Gerhardt, A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, W. Stolz, S.W. Koch, W.W. Rühle, J. Hader, J. V. Moloney, E.P. O'Reilly, B. Borchert, A. Yu. Egorov, H. Riechert, H.C. Schneider, W.W. Chow

IEEE J. Quantum Electron. 38, 213

Influence of growth conditions on the optical gain of 1.3 µm (GaIn)(NAs)/GaAs lasers

2002 - Nils C. Gerhardt, Martin R. Hofmann , K. Handtke, W. Stolz, S.W. Koch, J. Hader, J.V. Moloney, A. Yu. Egorov, H. Riechert

International Semiconductor Laser Conference, Garmisch-Partenkichen, Germany

The Osteoblast Mechanoreceptor, Microgravity Perception and Thermodynamics

2002 - Erk Mennenga-Klopp , D. Graff, J. Struckmeier, M. Born, S. Curtze, Martin R. Hofmann , D.B. Jones

Journal of Gravitational Physiology 9, 269

Physics of 1.3 µm (GaIn)(NAs)/GaAs semiconductor lasers

2002 - Martin R. Hofmann , Nils C. Gerhardt, Wagner, A., Stolz, W., Koch, S. W., Rühle, W. W., Hader, J.

14th Annual Meeting of the IEEE, LEOS 2001, Lasers and Electro-Optics Society, Jahr 2002, H 1, S. 326-327

Dynamic studies on living cells with an atomic force fluorescence-microscope

2001 - J. Struckmeier, Erk Mennenga-Klopp , M. Born, Martin R. Hofmann , J. Tenbosch, D. Rink, D. W. Jones, S. Ecke, H. Butt

Biomedical optics, München

Microgravity sensing, mechano-sensing and osteoblasts

2001 - D. Jones, S. Curze, T.Rieger, M. Kratz, J. Struckmeier, E. Klopp, Martin R. Hofmann , T. van Cleynerbreugel, J. van der Sloten

Proceedings of the 15th ESA-SP 471, 395

Spintronic: Spin electronics and optoelectronics in semiconductors

2001 - M. Oestreich, J. Hübner, D. Hägele, M. Bender, Nils C. Gerhardt, Martin R. Hofmann , W.W. Rühle, H. Kalt, T. Hartmann, P. Klar, W. Heimbrodt, W. Stolz

Festkörperprobleme 41, 173-186

Microgravity sensing, mechano-sensing and osteoblasts

2001 - D. Jones, S. Curze, T. Rieger, M. Kratz, J. Struckmeier, Erk Mennenga-Klopp , Martin R. Hofmann , T. van Cleynerbreugel, J. van der Sloten

15th ESA symposium on European Rocket and Balloon Programmes and Related Research, Biarritz, France

Dynamic studies on living cells with an atomic force fluorescence-microscope

2001 - J. Struckmeier, Erk Mennenga-Klopp , M. Born, J. Tenbosch, D. Rink, S. Ecke, H. Butt, Martin R. Hofmann , D. B. Jones

Proc. SPIE 4260, 7

Real-time atomic force fluorescence microscopy on living cells

2001 - J. Struckmeier, Erk Mennenga-Klopp , M. Born, J. Tenbosch, D. Rink, S. Ecke, H. Butt, Martin R. Hofmann , D. B. Jones

Proc. SPIE 4434, 142

Excitons and biexcitons as mesoscopic probes of disorder in semiconductor heterostructures

2001 - E. Finger, S. Kraft, Martin R. Hofmann , S. Nau, G. Bernatz, W. Stolz, T. Meier, P. Thomas, S.W. Koch, W.W. Rühle

CLEO/QUELS, Baltimore, USA

Emission dynamics of (GaIn)(NAs)/GaAs lasers emitting at 1.3 µm

2001 - Martin R. Hofmann , A. Wagner, Nils C. Gerhardt, C. Ellmers, F. Höhnsdorf, J. Koch, S. Leu, W. Stolz, W. W. Rühle

Proc. SPIE 4283, 256 (2001) - invited

Physics of 1.3 µm (GaIn)(NAs)/GaAs lasers

2001 - Martin R. Hofmann , Nils C. Gerhardt, A. Wagner, W. Stolz, S.W. Koch, W.W. Rhle, J. Hader, J. V. Moloney

LEOS, San Diego, USA (invited)

Continuous Wave THz-imaging

2001 - T. Kleine-Ostmann, P. Knobloch, M. Koch, Stefan Hoffmann, Martin Breede, Martin R. Hofmann , G. Hein, K. Pierz, M. Sperling, K. Donhuijsen

Electronics Letters 37, 1461

Influence of varying N-environments on the properties of (Ga,In)(N,As) vertical-cavity surface emitting lasers

2001 - S.A. Choulis, T.J.C. Hosea, P.J. Klar, Martin R. Hofmann , W. Stolz

Appl. Phys. Lett. 79, 4277

Gain spectra of (GaIn)(NAs)/GaAs laser diodes for the 1.3 µm wavelength range

2001 - Martin R. Hofmann , A. Wagner, C. Ellmers, C. Schlichenmeier, S. Schäfer, F. Höhnsdorf, J. Koch, S. Leu, W. Stolz, S.W. Koch, W.W. Rühle, J. Hader, J. V. Moloney, E.P. O'Reilly, B. Borchert, A. Yu. Egorov, H. Riechert

Appl. Phys. Lett. 78, 3009

Optische Verstärkung von (GaIn)(NAs)/GaAs Halbleiterlasern

2001 - Nils C. Gerhardt, A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, W. Stolz, Martin R. Hofmann , S.W. Koch, W.W. Rühle, J. Hader , J.V. Moloney

DPG Frühjahrstagung, Hamburg, Germany (2001)

Halbleiterlaser für Terahertzerzeugzung und Scanneranwendungen

2001 - Stefan Hoffmann

Philipps-Universität Marburg

Gain of 1.3 µm (GaIn)(NAs)/GaAs lasers, Workshop on novel gain materials

2001 - Martin R. Hofmann , Nils C. Gerhardt, A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, S. Leu, W. Stolz, S.W. Koch, W.W. Rühle, B. Borchert, A. Yu. Egorov, H. Riechert

Würzburg, Germany

Physics of (GaIn)(NAs) lasers

2001 - Martin R. Hofmann

Ultrafast nonlinear optics and semiconductor lasers - workshop

Analysis of disorder-induced dephasing

2000 - S. Weiser, T. Meier, J. Möbius, A. Euteneuer, E. Mayer, W. Stolz, Martin R. Hofmann , W. Rühle, P. Thomas, S.W. Koch

CLEO/IQEC Europe, Nice, France

Strahlungsmeßvorrichtung (Femtosekunden - Autokorrelator)

2000 - Euteneuer A., Gießen H., Martin R. Hofmann

DE 199 26 812.6, PCT/EP00/05177, US 10/009,589, Patent erteilt am 14.12.2000

Emission dynamics and gain of (GaIn)(NAs)/GaAs lasers

2000 - Nils C. Gerhardt, A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, W. Stolz, Martin R. Hofmann , S.W. Koch, W.W. Rühle, J. Hader , J.V. Moloney

Microcavity and Photonics Workshop, Ascona, Schweiz

Portable fluorescence photometer for monitoring free calcium

2000 - J. Struckmeier, Erk Mennenga-Klopp , M. Born, Martin R. Hofmann , J. Tenbosch, D.B. Jones

Rev. Sci. Inst 71, 4531

Coherent coupling in inhomogeneously broadened exciton ensembles

2000 - E. Finger, A. Euteneuer, Martin R. Hofmann , W. Stolz, W.W. Rühle

CLEO/IQEC Europe, Nice, France

Gain and emission dynamics of (GaIn)(NAs)/GaAs lasers

2000 - A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, S. Leu, W. Stolz, Martin R. Hofmann , W.W. Rühle

phys. stat. sol. 221, 567

Coherent coupling of excitons in disordered quantum-well structures

2000 - E. Finger, S. Kraft, A. Euteneuer, Martin R. Hofmann , W. Stolz, W.W. Rühle

phys. stat. sol. 221, 373

(GaIn)(NAs)/GaAs vertical-cavity surface-emitting lasers with high performance

2000 - Martin R. Hofmann

Festkörperprobleme 40, 599

Emission dynamics of (GaIn)(NAs)/GaAs VCSELs

2000 - A. Wagner, C. Ellmers, J. Koch, F. Höhnsdorf, S. Leu, W. Stolz, Martin R. Hofmann , W.W. Rühle

European VCSEL-workshop, Brussels

Disorder induced dephasing in semiconductors

2000 - S. Weiser, T. Meier, J. Möbius, A. Euteneuer, E.J. Mayer, W. Stolz, Martin R. Hofmann , W.W. Rühle, P. Thomas, S.W. Koch

Phys. Rev. B 61, 13088

Emission dynamics of (GaIn)(NAs) vertical-cavity surface-emitting lasers

2000 - A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, C. Agert, Martin R. Hofmann , W.W. Rühle, W. Stolz

CLEO/IQEQ, San Francisco, USA

Investigation of disordered semiconductor quantum-wells by coherent excitation spectroscopy

2000 - A. Euteneuer, E. Finger, W. Stolz, T. Meier, P. Thomas, S.W. Koch, Martin R. Hofmann , W.W. Rühle

phys. stat. sol. (a) 178, 183

Normal-mode linewidths in a semiconductor microcavity with various cavity qualities

2000 - Martin R. Hofmann , D. Karaiskaj, C. Ellmers, T. Maxisch, F. Jahnke, H.-J. Kolbe, G. Weiser, R. Rettig, S. Leu, W. Stolz, S.W. Koch, W.W. Rühle

phys. stat. sol.(a) 178, 179

Coherent coupling of excitons in disordered quantum-well structures

2000 - E. Finger, A. Euteneuer, Martin R. Hofmann , W. Stolz, W.W. Rühle

Nonlinear optics and excitation kinetics in semiconductors, Marburg

Gain and emission dynamics of (GaIn)(NAs)/GaAs lasers

2000 - A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, S. Leu, W. Stolz, Martin R. Hofmann , W.W. Rühle

Nonlinear optics and excitation kinetics in semiconductors, Marburg

Gain and emission dynamics of (GaIn)(NAs)/GaAs semiconductor lasers

2000 - A. Wagner, C. Ellmers, J. Koch, F. Höhnsdorf, S. Leu, W. Stolz, Martin R. Hofmann , W.W. Rühle

International COST 267 workshop, Berlin (invited)

New portable time-resolved photometer for monitoring the calcium dynamics of osteoblasts under mechanical and zero-gravity stimulation

2000 - J. Struckmeier, J. Tenbosch, Erk Mennenga-Klopp , M. Born, Martin R. Hofmann , D.W. Jones

Proc. SPIE 3921, 114

Oberflächenemittierende (GaIn)(NAs)/GaAs Halbleiterlaser mit optimierter Dynamik

2000 - Martin R. Hofmann , A. Wagner, C. Ellmers, J. Koch, F. Höhnsdorf, S. Leu, W. Stolz, W.W. Rühle

Symposium "Infrarote oberflächenemittierende Halbleiterlaser", DPG-Frühjahrstagung, Regensburg

(GaIn)(NAs)/GaAs vertical-cavity surface-emitting laser with ultrabroad temperature operation range

2000 - A. Wagner, C. Ellmers, F. Höhnsdorf, J. Koch, C. Agert, S. Leu, Martin R. Hofmann , W. Stolz, W.W. Rühle

Appl. Phys. Lett. 76, 271

Spectral filtering of femtosecond laser pulses by interference filters

2000 - R. Szipöcs, A. Köházi-Kis, P. Apai, E. Finger, A. Euteneuer, Martin R. Hofmann

Appl. Phys. B 70, 63

New portable time-resolved photometer for monitoring the calcium dynamics of osteoblasts under mechanical and zero-gravity stimulation

2000 - J. Struckmeier, J. Tenbosch, Erk Mennenga-Klopp , M. Born, Martin R. Hofmann , D.W. Jones

SPIE Photonics West, San Jose, USA (invited)

Multi-color, mode-locked Ti:sapphire laser with zero pulse jitter

2000 - R. Szipöcs, A. Euteneuer, E. Finger, Martin R. Hofmann

J. of Laser Physics 10, 1 (2000)

ETECAL - Eine neue Generation durchstimmbarer Diodenlaser

1999 - Martin R. Hofmann , J. Struckmeier, Martin Breede, B. Smarsly, A. Euteneuer

LaserOpto 31, 42

High-precision gain measurements on quantum-well laser diodes

1999 - Martin R. Hofmann

Gain and recombination in semiconductors, Grasmere, Großbritannien

Elektronisch abstimmbarer Diodenlaser

1999 - Martin R. Hofmann

Sensor report 14, 31

Energy loss rate of excitons in GaN

1999 - D. Hägele, R. Zimmermann, M. Oestreich, Martin R. Hofmann , W.W. Rühle, B.K. Meyer, H. Amano, I. Akasaki

Physica B 272, 409

Normal-mode linewidths in a semiconductor microcavity with various cavity qualities

1999 - Martin R. Hofmann , D. Karaiskaj, C. Ellmers, T. Maxisch, F. Jahnke, H.-J. Kolbe, G. Weiser, R. Rettig, S. Leu, W. Stolz, S.W. Koch, W.W. Rühle

OECS-6, Ascona, Schweiz (invited)

Distribution of exciton binding-energies in disordered semiconductor quantum-wells

1999 - A. Euteneuer, E. Finger, Martin R. Hofmann , W. Stolz, T. Meier, P. Thomas, S.W. Koch, W.W. Rühle

OECS-6, Ascona, Schweiz

Electronically tunable external cavity laser diode

1999 - J. Struckmeier, A. Euteneuer, B. Smarsly, Martin Breede, M. Born, Martin R. Hofmann , L. Hildebrand, J. Sacher

Opt. Lett. 24, 1573

Energy loss rate of excitons in GaN

1999 - D. Hägele, R. Zimmermann, Martin R. Hofmann , W.W. Rühle, M. Oestreich, B.K. Meyer, H. Amano, I. Akasaki

HCIS-11, Kyoto, Japan

Coherent excitation spectroscopy on inhomogeneous exciton ensembles

1999 - A. Euteneuer, E. Finger, Martin R. Hofmann , W. Stolz, T. Meier, P. Thomas, S.W. Koch, W.W. Rühle, R. Hey, K. Ploog

Phys. Rev. Lett. 83, 2073

Ultrafast (GaIn)(NAs)/GaAs vertical-cavity surface-emitting laser for the 1.3 µm wavelength regime

1999 - C. Ellmers, F. Höhnsdorf, J. Koch, C. Agert, S. Leu, D. Karaiskaj, Martin R. Hofmann , W. Stolz, W.W. Rühle

Appl. Phys. Lett. 74, 2271

Linewidths in a semiconductor microcavity with variable strength of normal-mode coupling

1999 - D. Karaiskaj, T. Maxisch, C. Ellmers, H.-J. Kolbe, G. Weiser, R. Rettig, S. Leu, W. Stolz, Martin R. Hofmann , F. Jahnke, S.W. Koch, W. Rühle

Phys. Rev. B 59, 13525

Spectral filtering of femtosecond laser pulses by interference filters

1999 - R. Szipöcs, A. Köházi-Kis, P. Apai, E. Finger, A. Euteneuer, Martin R. Hofmann

Ultrafast Optics, Ascona, Schweiz

Multi-color, mode-locked Ti:sapphire laser with zero pulse jitte

1999 - R. Szipöcs, A. Euteneuer, E. Finger, Martin R. Hofmann

8th International Laser Physics Workshop, Budapest, Ungarn

Electronically tunable external cavity laserdiode

1999 - J. Struckmeier, B. Smarsly, A. Euteneuer, Martin R. Hofmann

Laser 99, München

Miniature autocorrelator

1999 - A. Euteneuer, H. Gießen, Martin R. Hofmann

Laser 99, München

Cooling dynamics of excitons in GaN

1999 - D. Hägele, R. Zimmermann, M. Oestreich, Martin R. Hofmann , W.W. Rühle, B.K. Meyer, H. Amano, I. Akasaki

Phys. Rev. B 59, R7797

Optically pumped (GaIn)As/Ga(PAs) vertical-cavity surface-emitting lasers with optimized dynamics

1999 - C. Ellmers, Martin R. Hofmann , D. Karaiskaj, S. Leu, W. Stolz, W.W. Rühle, M. Hilpert

Appl. Phys. Lett. 74, 1367

Ultrafast dynamical response of strain-compensated (GaIn)As/Ga(PAs) microcavity lasers

1999 - C. Ellmers, S. Leu, Martin R. Hofmann , D. Karaiskaj, W.W. Rühle, W. Stolz

Proc. SPIE 3627, 70

Distribution of exciton binding-energies in disordered semiconductor quantum-wells

1999 - A. Euteneuer, E. Finger, Martin R. Hofmann , W. Stolz, T. Meier, P. Thomas, S.W. Koch, W.W. Rühle

CLEO/QELS, Baltimore, USA

Diodenlaser für medizinische Forschung und Meßtechnik

1999 - Martin R. Hofmann , J. Struckmeier, D. Jones, T. Pohl

Hannovermesse Industrie, Hannover

Gain and emission dynamics of semiconductor lasers

1999 - Martin R. Hofmann

Recent Res. Devel. Applied Phys. 2, 269

Elektrooptisch gesteuerter Laserresonator ohne mechanischbewegliche Teile, insbesondere für spektral abstimmbare Laser und für räumlich steuerbaren Ausgangsstrahl

1999 - Martin R. Hofmann , Struckmeier, J., Euteneuer, A., Smarsly, B.

DE 199 09 497 C1, Patent erteilt am 05.07.2000

Ultrafast dynamical response of strain-compensated (GaIn)As/Ga(PAs) microcavity lasers

1999 - C. Ellmers, S. Leu, Martin R. Hofmann , D. Karaiskaj, W.W. Rühle, W. Stolz

SPIE Photonics West, OE/LASE San Jose, USA

Ultrafast physics in Nitrides

1999 - Martin R. Hofmann , R. Zimmermann, M. Oestreich, W.W. Rühle

Materials Science & Engineering B 59, 141

Emission dynamics of a (GaIn)(NAs) vertical-cavity surface-emitting laser

1998 - C. Ellmers, F. Höhnsdorf, J. Koch, C. Agert, Martin R. Hofmann , W.W. Rühle, W. Stolz

post-deadline paper CLEO/EQEC, Glasgow, U.K.

GaAs-based VCSEL-structures with strain-compensated (GaIn)As/Ga(PAs)-MQWH active regions grown by using TBAs and TBP

1998 - C. Ellmers, S. Leu, R. Rettig, Martin R. Hofmann , W.W. Rühle, W. Stolz

J. Crystal Growth 195, 630

GaAs-based VCSEL-structures with strain-compensated (GaIn)As/Ga(PAs)- MQWH active regions grown by using TBAs and TBP

1998 - C. Ellmers, S. Leu, R. Rettig, Martin R. Hofmann , W.W. Rühle, W. Stolz

ICMOVPE IX, La Jolla, California, USA

Pump geometry for resonant and quasi- resonant optical excitation of microcavity lasers

1998 - Martin R. Hofmann , F. Jahnke, C. Ellmers, M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W.W. Rühle, M. Hilpert, H. Klann, H.D. Wolf, D. Bernklau, H. Riechert

Opt. Lett. 23, 849

Gain dynamics of semiconductor lasers

1998 - Martin R. Hofmann

Proc. SPIE 3283, 109 (1998) Physics and Simulation of Optoelectronic Devices VI

Measurement and calculation of gain spectra for (GaIn)As/(AlGaAs) single quantum well lasers

1998 - C. Ellmers, Martin R. Hofmann , W.W. Rühle, A. Girndt, F. Jahnke, A. Knorr, S.W. Koch, C. Hanke, L. Korte, C. Hoyler

Appl. Phys. Lett. 72, 1647

Ultrafast physics in Nitrides

1998 - Martin R. Hofmann , R. Zimmermann, M. Oestreich, W.W. Rühle

E-MRS/ICAM Meeting, Strasbourg, France (invited)

MOVPE Growth of Strain-compensated GaAs-based VCSEL-Structures

1998 - S. Leu, R. Rettig, C. Ellmers, Martin R. Hofmann , W.W. Rühle, W. Stolz

193rd WE-Heraeus Symposium, Loveno di Menaggio, Italien (invited)

Picosecond pulse emission of optically pumped vertical cavity surface emitting lasers: Influence of carrier relaxation

1998 - C. Ellmers, Martin R. Hofmann , M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W. W. Rühle, M. Hilpert, H. Klann, H.D. Wolf, D. Bernklau, H. Riechert

193rd WE-Heraeus Symposium, Loveno di Menaggio, Italien (invited)

Gain spectra of an (InGa)As single quantum well laser diode

1998 - C. Ellmers, Martin R. Hofmann , W.W. Rühle, A. Girndt, F. Jahnke, W.W. Chow, A. Knorr, S.W. Koch, C. Hanke, L. Korte, C. Hoyler

phys. stat. sol. (b) 206, 407

Gain dynamics of semiconductor lasers

1998 - Martin R. Hofmann

SPIE Photonics West, OE/LASE San Jose, USA (invited)

Transient four-wave-mixing spectroscopy on Gallium Nitride: Energy splittings of intrinsic excitonic resonances

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

Phys. Rev. B 56, R12722

Biexcitonic binding energies in the transition from three- to two-dimensional semiconductors

1997 - A. Euteneuer, J. Möbius, R. Rettig, Martin R. Hofmann , E. Mayer, W. Stolz, E.O. Göbel, W.W. Rühle

Phys. Rev. B 56, R10028

Confinement dependence of biexcitonic binding energies in semiconductor quantum wells

1997 - A. Euteneuer, J. Möbius, R. Rettig, Martin R. Hofmann , E. Mayer, W. Stolz, E.O. Göbel, W.W. Rühle

phys. stat. sol. (a) 164, 253

Confinement dependence of biexcitonic binding energies in semiconductor quantum wells

1997 - A. Euteneuer, J. Möbius, R. Rettig, Martin R. Hofmann , E. Mayer, W. Stolz, E.O. Göbel, W.W. Rühle

OECS-5, Göttingen, Germany

Gain spectra of an (InGa)As single quantum well laser diode

1997 - C. Ellmers, Martin R. Hofmann , W.W. Rühle, A. Girndt, F. Jahnke, W.W. Chow, A. Knorr, S.W. Koch, C. Hanke, L. Korte, C. Hoyler

NOEKS, Gral Müritz, Germany (invited)

Transient four wave mixing experiments on GaN

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

MRS Internet Journal of Nitride Research 2, 24

Quantum beat spectroscopy on excitons in GaN

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

Materials Science; Engineering B. 50, 205

Quantum beat spectroscopy on excitons in GaN

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

E-MRS/ICAM, Strasbourg, France

Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers

1997 - M. Hilpert, Martin R. Hofmann , C. Ellmers, M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W.W. Rühle, H.D. Wolf, D. Bernklau, H. Riechert

Appl. Phys. Lett. 71, 3761

Influence of carrier cooling on the emission dynamics of semiconductor microcavity lasers

1997 - M. Hilpert, Martin R. Hofmann , C. Ellmers, M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W.W. Rühle, H.D. Wolf, D. Bernklau, H. Riechert

phys. stat. sol. (b) 204, 548

Transient four wave mixing experiments on GaN

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

2nd GaN workshop, Sophia Antipolis, France

Monolithic colliding pulse mode-locked semiconductor lasers

1997 - S. Bischoff, J. Mørk, T. Franck, S.D. Brorson, Martin R. Hofmann , K. Fröjdh, L. Prip, M.P. Sørensen

Journal of Quantum Semiclass. Opt. 9, 655 (1997) - invited

Spectrally and temporally resolved gain dynamics in mode locked semiconductor quantum well lasers

1997 - P. Miltenyi, M. Koch, Martin R. Hofmann , H. Jung, W. Elsäßer

Appl. Phys. Lett. 70, 1506

Chirp of monolithic colliding pulse mode-locked diode lasers

1997 - Martin R. Hofmann , S. Bischoff, T. Franck, L. Prip, S.D. Brorson, J. Mørk, K. Fröjdh

Appl. Phys. Lett. 70, 2514

Influence of carrier cooling on the emission dynamics of semiconductor microcavity lasers

1997 - M. Hilpert, Martin R. Hofmann , C. Ellmers, M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W.W. Rühle, H.D. Wolf, D. Bernklau, H. Riechert

HCIS-10, Berlin, Deutschland

Temporal and spectral dynamics in Multiquantum well semiconductor saturable absorbers

1997 - Martin R. Hofmann , K. Fröjdh, S. D. Brorson, J. Mørk

IEEE Photon. Technol. Lett. 9, 622

Subpicosecond heterodyne four-wave mixing experiments on InGaAsP semiconductor laser amplifiers

1997 - Martin R. Hofmann , S.D. Brorson, J. Mørk, P. Skovgaard, J. McInerney, A. Mecozzi

Opt. Commun. 139, 117

Ultra-broadband chirped mirrors for femtosecond lasers

1997 - E.J. Mayer, J. Möbius, A. Euteneuer, Martin R. Hofmann , W.W. Rühle, A.P. Kovacs, A. Köházi-Kis, R. Szipöcs

CLEO/IQEQ, Baltimore, USA

Pulse shape characterisation of colliding pulse modelocked laser diodes

1996 - T. Franck, Martin R. Hofmann , L. Prip, S. Bischoff, S.D. Brorson, J. Mørk

CLEO/IQEC, Anaheim, USA

Time resolved four wave mixing in semiconductor laser amplifiers

1996 - Martin R. Hofmann , S.D. Brorson, J. Mørk, A. Mecozzi

CLEO/IQEC, Anaheim, USA

Transient four-wave mixing with collinear pump and probe

1996 - A. Mecozzi, J. Mørk, Martin R. Hofmann

Opt. Lett. 21, 1017

Time resolved four-wave mixing technique to measure the ultrafast coherent dynamics in semiconductor optical amplifiers

1996 - Martin R. Hofmann , S.D. Brorson, J. Mørk, A. Mecozzi

Appl. Phys. Lett. 68, 3236

Modelling and characterization of colliding pulse modelocked (CPM) quantum well lasers

1996 - S. Bischoff, S.D. Brorson, T. Franck, Martin R. Hofmann , L. Prip, M.P. Sørensen, J. Mørk

SPIE Photonics West, OE/LASE San Jose, USA (invited)

Modelling and characterization of colliding pulse modelocked (CPM) quantum well lasers

1996 - S. Bischoff, S.D. Brorson, T. Franck, Martin R. Hofmann , L. Prip, M.P. Sørensen, J. Mørk

Proc. SPIE 2693, 477 (1996) Physics and Simulation of Optoelectronic Devices IV, Ed. W.W. Chow and M. Osinski

Theory of coherent phenomena in pump - probe excitation of semiconductor amplifiers

1995 - A. Girndt, A. Knorr, Martin R. Hofmann , S.W. Koch

J. Appl. Phys. 78, 2946

Long-term stable mode locking of a visible diode laser with phase-conjugate feedback

1995 - E. Miltenyi, M.O. Ziegler, Martin R. Hofmann , J. Sacher, W. Elsäßer, E.O. Göbel, D.L. Mac Farlane

Optics Lett. 20, 734

Phase and amplitude stabitlity of an external cavity laser diode modelocked by optoelectronic feedback

1995 - M.O. Ziegler, Martin R. Hofmann , J. Sacher, W. Elsäßer, E.O. Göbel

Electron. Lett. 31, 371

Theoretical analysis of ultrafast pump - probe experiments in semiconductor amplifiers

1995 - A. Girndt, A. Knorr, Martin R. Hofmann , S.W. Koch

Appl. Phys. Lett. 66, 550

High spectral tuning range of a modelocked InGaAs/InGaAsP MQW laser diode due to light hole gain contribution

1994 - Martin R. Hofmann , W. Weise, W. Elsäßer, E.O. Göbel

IEEE Photon. Technol. Lett. 6, 1306

Picosecond gain dynamics of an actively mode - locked external cavity laser diode

1994 - Martin R. Hofmann , M. Koch, J. Feldmann, W. Elsäßer, E.O. Göbel, W.W. Chow, S.W. Koch

IEEE J. Quantum Electron. 30, 1756

Femtosecond pump-probe experiments on semiconductor optical amplifiers

1994 - Martin R. Hofmann , M. Koch, J. Feldmann, W. Elsäßer, E.O. Göbel

International workshop on pattern singularities and collapse: Applications to semiconductor lasers and critical focusing of ultrashort pulses, Cork, Ireland (invited)

Temporal and spectral gain dynamics in an actively modelocked semiconductor laser

1994 - Martin R. Hofmann , M. Koch, H.-J. Heinrich, G. Weiser, J. Feldmann, W. Elsäßer, E.O. Göbel, W.W. Chow, S.W. Koch

IEEE Proc.-Optoelectron. 141, 127

Ultrafast gain dynamics in InGaAlP lasers

1994 - J.A. Tatum, Martin R. Hofmann , J. Sacher, D.L. Mac Farlane

OSA meeting, Dallas, USA

Verstärkungsdynamik modengekoppelter Laserdioden

1994 - Martin R. Hofmann

Philipps-Universität Marburg

Picosecond gain dynamics of an actively modelocked external cavity laser diode

1994 - Martin R. Hofmann , M. Koch, H.-J. Heinrich, G. Weiser, J. Feldmann, W. Elsäßer, E.O. Göbel, S.W. Koch, W.W. Chow

SPIE Photonics West, OE/LASE Los Angeles, USA (invited)

Picosecond gain dynamics of an actively modelocked external cavity laser diode

1994 - Martin R. Hofmann , M. Koch, H.-J. Heinrich, G. Weiser, J. Feldmann, W. Elsäßer, E.O. Göbel, S.W. Koch, W.W. Chow

Proc. SPIE 2146, 256 (1994) Physics and Simulation of Optoelectronic Devices II, Ed. W.W. Chow and M. Osinski

Picosecond gain dynamics in an actively modelocked external cavity laser diode

1993 - Martin R. Hofmann , M. Koch, J. Feldmann, W. Elsäßer, E.O. Göbel

Semiconductor and integrated optoelectronics conference, Cardiff, Wales

Modelocking of interferometric Y-Lasers in an external cavity

1993 - Martin R. Hofmann , D. Baums, J. Sacher, W. Elsäßer, M. Schilling, W. Idler, K. Wünstel, E. Zielinski, O. Hildebrand

IEEE Photon. Technol. Lett. 5, 1135

Dynamic mode switching of a RF modulated external cavity laser diode - Due to spectral hole burning

1992 - Martin R. Hofmann , J. Sacher, W. Elsäßer, E.O. Göbel

The 1992 European Semiconductor laser workshop, Potsdam

Mode locking of semiconductor lasers through optoelectronic feedback (OEFB)

1992 - Martin R. Hofmann , M. Ziegler, J. Sacher, W. Elsäßer, E.O. Göbel

Europ. Conf. on Opt. Commun., scientific exhibition, Berlin

Picosecond pulse generation in a GaAs/ GaAlAs single - quantum well laser at the first and second subband transition

1992 - W. Elsäßer, J. Sacher, F. Hackenbuchner, Martin R. Hofmann , E.O. Göbel, S. Schuster, T. Wicht, H. Haug, H. Jung, E. Schlosser

IEEE Photon. Technol. Lett. 4, 966

Mode - locking of a GaAs/GaAlAs single quantum well laser at the second quantized state

1991 - W. Elsäßer, J. Sacher, F. Hackenbuchner, Martin R. Hofmann , E.O. Göbel

Europ. Conf. on Quantum Electron., Edinburgh

Erzeugung von Pikosekunden - Lichtimpulsen mit Halbleiterlasern

1991 - E.O. Göbel, W. Elsäßer, J. Sacher, Martin R. Hofmann , F. Hackenbuchner

Hannovermesse Industrie, Hannover

Output characteristics of RF-modulated laser diodes

1991 - T. Wicht, S. Schuster, H. Haug, J. Sacher, Martin R. Hofmann , W. Elsäßer, E.O. Göbel

IEEE J. Quantum Electron 27, 1682
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