Dr. Andreas Unger Profile

Dr. Andreas Unger

at Coherent Mainz

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 22 February 2017 Paper

kW-class direct diode laser for sheet metal cutting based on commercial pump modules

U. Witte, F. Schneider, C. Holly, A. Di Meo, D. Rubel, F. Boergmann, M. Traub, D. Hoffmann, S. Drovs, T. Brand, A. Unger

Proceedings Volume 10086, 1008608 (2017) https://doi.org/10.1117/12.2252145

KEYWORDS: High power diode lasers, Semiconductor lasers, Laser cutting, Metals, Fiber couplers, Dielectric filters, Dense wavelength division multiplexing, Laser processing, Laser optics, Laser systems engineering, Multiplexing, Optical filters, Electro optics

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Proceedings Article | 22 February 2017 Presentation + Paper

High power fiber coupled diode lasers for display and lighting applications

Simon Drovs, Andreas Unger, Sascha Dürsch, Bernd Köhler, Jens Biesenbach

Proceedings Volume 10086, 100860N (2017) https://doi.org/10.1117/12.2253137

KEYWORDS: Semiconductor lasers, Visible radiation, Light sources and illumination, High power diode lasers, Projection systems, Light sources, High power fiber coupled lasers, Lamps, Diodes, Fiber coupled lasers, Collimation, Laser development, Polarization

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Proceedings Article | 22 April 2016 Paper

Beam shaping concepts for kW-class CW and QCW diode lasers

Andreas Unger, Willhelm Fassbender, Holger Müntz, Bernd Köhler, Jens Biesenbach

Proceedings Volume 9730, 97300H (2016) https://doi.org/10.1117/12.2212714

KEYWORDS: Beam shaping, Semiconductor lasers, Fiber couplers, Fiber coupled lasers, Packaging, Continuous wave operation, Laser development, Sensors, Diodes, Laser applications

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Proceedings Article | 4 March 2016 Paper

Multi-kW high-brightness fiber coupled diode laser based on two dimensional stacked tailored diode bars

Andreas Bayer, Andreas Unger, Bernd Köhler, Matthias Küster, Sascha Dürsch, Heiko Kissel, David Irwin, Christian Bodem, Nora Plappert, Maik Kersten, Jens Biesenbach

Proceedings Volume 9733, 97330A (2016) https://doi.org/10.1117/12.2212695

KEYWORDS: Semiconductor lasers, Fiber coupled lasers, Fiber couplers, Fiber lasers, Diodes, Materials processing, Multiplexing, Reliability, Beam shaping, Metals, Computer aided design, Laser development, Laser sources

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Proceedings Article | 1 April 2015 Paper

Wavelength stabilized multi-kW diode laser systems

Bernd Köhler, Andreas Unger, Tobias Kindervater, Simon Drovs, Paul Wolf, Ralf Hubrich, Anna Beczkowiak, Stefan Auch, Holger Müntz, Jens Biesenbach

Proceedings Volume 9348, 93480Q (2015) https://doi.org/10.1117/12.2079428

KEYWORDS: Semiconductor lasers, Laser systems engineering, Fiber coupled lasers, Fiber couplers, High power lasers, Volume holography, Holography, Multiplexing, Reflectivity, Collimation

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Proceedings Article | 1 April 2015 Paper

Tailored bar concepts for 10mm-mrad fiber coupled modules scalable to kW-class direct diode lasers

Andreas Unger, Ross Uthoff, Michael Stoiber, Thomas Brand, Heiko Kissel, Bernd Köhler, Jens Biesenbach

Proceedings Volume 9348, 934809 (2015) https://doi.org/10.1117/12.2079425

KEYWORDS: Fiber couplers, Semiconductor lasers, Lithium, Fiber coupled lasers, Laser development, Fiber lasers, Mirrors, Collimation, Polarization, Diodes

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Proceedings Article | 1 April 2015 Paper

High-power diode lasers under external optical feedback

Britta Leonhäuser, Heiko Kissel, Jens Tomm, Martin Hempel, Andreas Unger, Jens Biesenbach

Proceedings Volume 9348, 93480M (2015) https://doi.org/10.1117/12.2079116

KEYWORDS: Near field optics, Near field, Semiconductor lasers, Reflectivity, Gallium arsenide, Mirrors, Diodes, Photons, High power lasers, Absorption

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Proceedings Article | 7 March 2014 Paper

Feedback-induced catastrophic optical mirror damage (COMD) on 976nm broad area single emitters with different AR reflectivity

Britta Leonhäuser, Heiko Kissel, Andreas Unger, Bernd Köhler, Jens Biesenbach

Proceedings Volume 8965, 896506 (2014) https://doi.org/10.1117/12.2039153

KEYWORDS: Near field optics, Near field, Diodes, Antireflective coatings, Semiconductor lasers, Reflectivity, Mirrors, Coating, Ions, Cameras

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Proceedings Article | 7 March 2014 Paper

High-power visible spectrum diode lasers for display and medical applications: beam sources with tailored beam quality and spectral characteristics

Andreas Unger, Bernd Köhler, Jens Biesenbach

Proceedings Volume 8965, 896513 (2014) https://doi.org/10.1117/12.2039718

KEYWORDS: Fiber couplers, Semiconductor lasers, Fiber coupled lasers, Polarization, Visible radiation, Fiber lasers, Diodes, Collimation, Projection systems, Laser sources

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Proceedings Article | 26 February 2013 Paper

High-power fiber-coupled 100W visible spectrum diode lasers for display applications

Andreas Unger, Matthias Küster, Bernd Köhler, Jens Biesenbach

Proceedings Volume 8605, 86050K (2013) https://doi.org/10.1117/12.2001837

KEYWORDS: Semiconductor lasers, Fiber couplers, Fiber coupled lasers, Collimation, Diodes, Fiber lasers, Visible radiation, Polarization, Light sources, Projection systems

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Proceedings Article | 22 February 2013 Paper

Multi-kW high-brightness fiber coupled diode laser

Bernd Köhler, Armin Segref, Paul Wolf, Andreas Unger, Heiko Kissel, Jens Biesenbach

Proceedings Volume 8605, 86050B (2013) https://doi.org/10.1117/12.2005088

KEYWORDS: Semiconductor lasers, Fiber couplers, Fiber lasers, Multiplexing, Fiber coupled lasers, Materials processing, Optical testing, Laser systems engineering, Dielectric mirrors, Solid state lasers

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Proceedings Article | 9 February 2012 Paper

Scalable high-power and high-brightness fiber coupled diode laser devices

Bernd Köhler, Sandra Ahlert, Andreas Bayer, Heiko Kissel, Holger Müntz, Axel Noeske, Karsten Rotter, Armin Segref, Michael Stoiber, Andreas Unger, Paul Wolf, Jens Biesenbach

Proceedings Volume 8241, 824108 (2012) https://doi.org/10.1117/12.909189

KEYWORDS: Semiconductor lasers, Fiber lasers, Fiber couplers, Fiber coupled lasers, Laser systems engineering, Materials processing, High power lasers, Laser applications, Electro optics, Polarization

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Showing 5 of 12 publications

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