Dr. Berthold Schmidt Profile

Dr. Berthold Schmidt

Managing Board CTO at TRUMPF SE + Co KG

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 7 May 2018 Paper

Paper

Forward development of kW-class power diode laser bars

S. Strohmaier, G. Erbert, T. Rataj, A. H. Meissner-Schenk, V. Loyo-Maldonado, C. Carstens, H. Zimer, B. Schmidt, T. Kaul, M. Karow, M. Wilkens, P. Crump

Proceedings Volume 10514, 1051409 (2018) https://doi.org/10.1117/12.2290382

KEYWORDS: Semiconductor lasers, Continuous wave operation, High power lasers, Laser development, Diodes, High power diode lasers, Waveguide lasers, Resonators, Electro optics

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Proceedings Article | 19 February 2018 Presentation + Paper

Presentation + Paper

Advanced chip designs and novel cooling techniques for brightness scaling of industrial, high power diode laser bars

S. Heinemann, S. McDougall, G. Ryu, L. Zhao, X. Liu, C. Holy, C.-L. Jiang, P. Modak, Y. Xiong, T. Vethake, S. Strohmaier, B. Schmidt, H. Zimer

Proceedings Volume 10514, 105140Y (2018) https://doi.org/10.1117/12.2290638

KEYWORDS: Semiconductor lasers, Reliability, Refractive index, Diodes, Quantum wells, Laser applications, Waveguides, Near field, Packaging, Temperature metrology

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Proceedings Article | 19 February 2018 Paper

Paper

970-nm ridge waveguide diode laser bars for high power DWBC systems

Martin Wilkens, Götz Erbert, Hans Wenzel, Andrea Knigge, Paul Crump, Andre Maaßdorf, Jörg Fricke, Peter Ressel, Stephan Strohmaier, Berthold Schmidt, Günther Tränkle

Proceedings Volume 10514, 105140E (2018) https://doi.org/10.1117/12.2289870

KEYWORDS: Semiconductor lasers, Waveguides, Laser development, Waveguide lasers, Laser systems engineering, High power lasers, Laser processing, Electronic design automation, Fiber lasers, Materials processing

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Proceedings Article | 15 February 2018 Open Access

Open Access

Presentation + Paper

Advanced industrial laser systems and applications

B. Schmidt, M. Schaefer

Proceedings Volume 10525, 1052502 (2018) https://doi.org/10.1117/12.2299534

KEYWORDS: Laser applications, Semiconductor lasers, Gas lasers, Pulsed laser operation, Fiber lasers, Laser systems engineering, Laser cutting, Laser welding, Picosecond phenomena, Optical amplifiers

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Proceedings Article | 27 February 2017 Presentation + Paper

Presentation + Paper

kW-class diode laser bars

S. Strohmaier, G. Erbert, A. H. Meissner-Schenk, M. Lommel, B. Schmidt, T. Kaul, M. Karow, P. Crump

Proceedings Volume 10086, 100860C (2017) https://doi.org/10.1117/12.2250383

KEYWORDS: Semiconductor lasers, Laser applications, Continuous wave operation, Laser systems engineering, Laser development, Packaging, Resistance, Resonators, Heatsinks, Electro optics

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Proceedings Article | 13 March 2015 Paper

Paper

Advancements in high-power high-brightness laser bars and single emitters for pumping and direct diode application

Haiyan An, Ching-Long Jiang, Yihan Xiong, Qiang Zhang, Aloysius Inyang, Jason Felder, Alexander Lewin, Robert Roff, Stefan Heinemann, Berthold Schmidt, Georg Treusch

Proceedings Volume 9348, 93480I (2015) https://doi.org/10.1117/12.2080175

KEYWORDS: Semiconductor lasers, Diodes, Fiber lasers, High power lasers, Laser systems engineering, Reliability, Laser development, Disk lasers, Fiber couplers, Packaging

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Proceedings Article | 7 March 2014 Paper

Paper

Methods for slow axis beam quality improvement of high power broad area diode lasers

Haiyan An, Yihan Xiong, Ching-Long Jiang, Berthold Schmidt, Georg Treusch

Proceedings Volume 8965, 89650U (2014) https://doi.org/10.1117/12.2040986

KEYWORDS: Waveguides, Semiconductor lasers, Thermal effects, Broad area laser diodes, Refractive index, Laser systems engineering, Near field, High power lasers, Fiber coupled lasers, Optical filters

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Proceedings Article | 18 February 2010 Paper

Paper

High temperature and high peak-power 808nm QCW bars and stacks

G. Bacchin, A. Fily, B. Qiu, D. Fraser, S. Robertson, V. Loyo-Maldonado, S. McDougall, B. Schmidt

Proceedings Volume 7583, 75830P (2010) https://doi.org/10.1117/12.843735

KEYWORDS: Semiconducting wafers, Reliability, Tantalum, High power lasers, Quantum wells, Nonabsorbing mirrors, Laser damage threshold, Thermography, Optimization (mathematics), Laser resonators

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Proceedings Article | 14 April 2006 Paper

Paper

Influence of thermal effects on the performance of high-power semiconductor lasers and pump-laser modules

Nicolai Matuschek, Tomas Pliska, Jörg Troger, Stefan Mohrdiek, Berthold Schmidt

Proceedings Volume 6184, 618402 (2006) https://doi.org/10.1117/12.662809

KEYWORDS: Semiconductor lasers, Resistance, Reliability, Fiber Bragg gratings, High power lasers, Laser stabilization, Thermal effects, Interfaces, Reflectivity, Fiber lasers

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Proceedings Article | 15 February 2006 Paper

Paper

9xx high power pump modules

Susanne Pawlik, Boris Sverdlov, Rainer Bättig, Berthold Schmidt, Hans-Ulrich Pfeiffer, Sebastian Arlt, Norbert Lichtenstein, Jürgen Müller, Jörg Troger, Bernd Valk, Christoph Harder

Proceedings Volume 6104, 61040J (2006) https://doi.org/10.1117/12.646362

KEYWORDS: Semiconductor lasers, Quantum efficiency, Multimode fibers, High power lasers, Reliability, Temperature metrology, Mirrors, Fiber couplers, Fiber lasers

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Proceedings Article | 1 April 2005 Paper

Paper

A compact, narrow-band, and low-noise 800-mW laser source at 980 nm

Tomas Pliska, Nicolai Matuschek, Joerg Troger, Berthold Schmidt, Stefan Mohrdiek, Christoph Harder

Proceedings Volume 5738, (2005) https://doi.org/10.1117/12.590307

KEYWORDS: Semiconductor lasers, Fiber Bragg gratings, Fiber lasers, Laser applications, Continuous wave operation, Laser sources, Frequency conversion, Waveguides, Laser stabilization, Laser resonators

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Proceedings Article | 17 March 2005 Paper

Paper

High-brightness 9xx and 14xx single-mode emitter array laser bars

Norbert Lichtenstein, Yvonne Manz, Pascal Mauron, Arnaud Fily, Berthold Schmidt, Juergen Mueller, Susanne Pawlik, Boris Sverdlov, Stefan Weiss, Achim Thies, Christoph Harder

Proceedings Volume 5711, (2005) https://doi.org/10.1117/12.590049

KEYWORDS: Semiconductor lasers, Laser applications, Electro optics, Reliability, Heatsinks, Fiber lasers, High power lasers, Fiber couplers, Waveguides

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Proceedings Article | 17 March 2005 Paper

Paper

325 Watts from 1-cm wide 9xx laser bars for DPSSL and FL applications

Norbert Lichtenstein, Yvonne Manz, Pascal Mauron, Arnaud Fily, Berthold Schmidt, Juergen Mueller, Sebastian Arlt, Stefan Weiss, Achim Thies, Joerg Troger, Christoph Harder

Proceedings Volume 5711, (2005) https://doi.org/10.1117/12.589560

KEYWORDS: Semiconductor lasers, Reliability, Electro optics, High power lasers, Modulation, Laser applications, Interfaces, Continuous wave operation, Resistance

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Proceedings Article | 17 March 2005 Paper

Paper

9xx high-power broad-area laser diodes

Berthold Schmidt, Boris Sverdlov, Susanne Pawlik, Norbert Lichtenstein, Juergen Mueller, Bernd Valk, Rainer Baettig, Bernd Mayer, Christoph Harder

Proceedings Volume 5711, (2005) https://doi.org/10.1117/12.601455

KEYWORDS: Semiconductor lasers, High power lasers, Multimode fibers, Resistance, Continuous wave operation, Temperature metrology, Prototyping, Reliability, Broad area laser diodes

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Proceedings Article | 1 June 2004 Paper

Paper

DPSSL and FL pumps based on 980-nm telecom pump laser technology: changing the industry

Norbert Lichtenstein, Berthold Schmidt, Arnaud Fily, Stefan Weiss, Sebastian Arlt, Susanne Pawlik, Boris Sverdlov, Jurgen Muller, Christoph Harder

Proceedings Volume 5336, (2004) https://doi.org/10.1117/12.558737

KEYWORDS: Semiconductor lasers, Reliability, Continuous wave operation, Laser applications, High power lasers, Laser systems engineering, Fiber lasers, Manufacturing, Laser welding, Diodes

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Proceedings Article | 8 December 2003 Paper

Paper

Further development of high-power pump laser diodes

Berthold Schmidt, Norbert Lichtenstein, Boris Sverdlov, Nicolai Matuschek, Stefan Mohrdiek, Tomas Pliska, Juergen Mueller, Susanne Pawlik, Sebastian Arlt, Hans-Ulrich Pfeiffer, Arnaud Fily, Christoph Harder

Proceedings Volume 5248, (2003) https://doi.org/10.1117/12.513292

KEYWORDS: Semiconductor lasers, Optical amplifiers, Fiber Bragg gratings, Reliability, High power lasers, Waveguides, Laser stabilization, Temperature metrology, Diodes, Resistance

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Proceedings Article | 29 September 1998 Paper

Paper

Roughness parameters and surface deformation measured by coherence radar

Peter Ettl, Berthold Schmidt, M. Schenk, Ildiko Laszlo, Gerd Haeusler

Proceedings Volume 3407, (1998) https://doi.org/10.1117/12.323304

KEYWORDS: Radar, Speckle, Surface finishing, Radium, Coherence (optics), Surface roughness, Mechanical sensors, Optical interferometry, Interferometry, Data acquisition

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Showing 5 of 17 publications

Conference Committee Involvement (3)

Optoelectronic Materials and Devices III

27 October 2008 | Hangzhou, China

Optoelectronic Materials and Devices

2 November 2007 | Wuhan, China

Optoelectronic Materials and Devices for Optical Communications

7 November 2005 | Shanghai, China

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