Dr. Thomas Westphalen Profile

Dr. Thomas Westphalen

at Fraunhofer-Institut für Lasertechnik

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 13 March 2024 Presentation + Paper

Presentation + Paper

Optical setup for a two-dimensional tweezer array with independently adjustable columns for neutral atom quantum computing

Martin Adams, Martin Traub, Hans-Dieter Hoffmann, Florian Meinert, Philipp Ilzhöfer, Thomas Westphalen, Kersten Ludwig, Jiachen Zhao, Achim Scholz, Govind Unnikrishnan, Ratnesh Kumar Gupta, Tilman Pfau, Constantin Haefner

Proceedings Volume 12911, 129110L (2024) https://doi.org/10.1117/12.2692620

KEYWORDS: Mirrors, Chemical species, Relays, Quantum computing, Quantum computers, Quantum channels, Optical path differences, Imaging systems, Imaging arrays, Lens arrays

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Proceedings Article | 15 March 2023 Presentation + Paper

Presentation + Paper

Beam shaping system for laser-induced crystal growth

Florian Rackerseder, Martin Traub, Toshimitsu Ito, Thomas Westphalen, Hans-Dieter Hoffmann

Proceedings Volume 12407, 124070D (2023) https://doi.org/10.1117/12.2651567

KEYWORDS: Crystals, Laser crystals, Beam splitters, Prisms, Semiconductor lasers, Mirrors, Beam shaping, Silica, Gallium, Copper

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Proceedings Article | 14 March 2023 Presentation + Paper

Presentation + Paper

Highly reliable diode laser pump sources for the space qualified MERLIN laser platform and future wind LiDAR missions

Martin Traub, Stephan Wissenberg, Thomas Westphalen, Sarah Klein, Jana Ammersbach, Marie Livrozet, Bastian Gronloh, Dominik Esser, Martin Giesberts, Heinrich Faidel, Dominik Mohr, Hans-Dieter Hoffmann, Constantin Haefner

Proceedings Volume 12403, 124030A (2023) https://doi.org/10.1117/12.2657282

KEYWORDS: Semiconductor lasers, Oscillators, LIDAR, Laser radiation, Laser development, Fiber coupled lasers, Methane, Fiber lasers, Fiber couplers, Transmitters

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Proceedings Article | 5 March 2021 Presentation + Paper

Presentation + Paper

Laser powder bed fusion of stainless steel 316L using a combination of high-power diode laser and galvanometer scanner

Tim Lantzsch, Martin Traub, Thomas Westphalen, Christian Tenbrock, Johannes Henrich Schleifenbaum

Proceedings Volume 11677, 116770M (2021) https://doi.org/10.1117/12.2573128

KEYWORDS: Semiconductor lasers, Laser welding, High power lasers, Laser scanners, 3D scanning, Manufacturing, Standards development, Fiber lasers, Chromatic aberrations, Scanners

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Proceedings Article | 23 February 2018 Paper

Paper

Fiber-coupled three-micron pulsed laser source for CFRP laser treatment

Sebastian Nyga, David Blass, Veronika Katzy, Thomas Westphalen, Bernd Jungbluth, Hans-Dieter Hoffmann

Proceedings Volume 10511, 105110G (2018) https://doi.org/10.1117/12.2288343

KEYWORDS: Laser sources, Optical parametric oscillators, Frequency conversion, Epoxies, Beam delivery, Absorption, Adhesives, Pulsed laser operation, Fiber lasers, Beam shaping

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Proceedings Article | 4 March 2016 Paper

Paper

CFRP bonding pre-treatment with laser radiation of 3 µm wavelength: laser/material interaction

David Blass, Stefan Kreling, Sebastian Nyga, Thomas Westphalen, Bernd Jungbluth, Hans-Dieter Hoffman, Klaus Dilger

Proceedings Volume 9736, 973614 (2016) https://doi.org/10.1117/12.2209514

KEYWORDS: Adhesives, Contamination, Absorption, Fiber lasers, Laser ablation, Frequency conversion, Optical parametric oscillators, Carbon, Structured optical fibers, Epoxies, Laser sources

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Proceedings Article | 7 March 2014 Paper

Paper

Automated alignment of fast-axis collimator lenses for high-power diode laser bars

Thomas Westphalen, Stefan Hengesbach, Carlo Holly, Martin Traub, Dieter Hoffmann

Proceedings Volume 8965, 89650V (2014) https://doi.org/10.1117/12.2041245

KEYWORDS: Semiconductor lasers, Lenses, Electroluminescent displays, Optical alignment, Collimators, Algorithm development, High power diode lasers, High power lasers, Laser applications, Optical components

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Proceedings Article | 7 March 2014 Paper

Paper

High-power dense wavelength division multiplexing (HP-DWDM) of frequency stabilized 9xx diode laser bars with a channel spacing of 1.5 nm

Stefan Hengesbach, Carlo Holly, Niels Krauch, Ulrich Witte, Thomas Westphalen, Martin Traub, Dieter Hoffmann

Proceedings Volume 8965, 89650C (2014) https://doi.org/10.1117/12.2036974

KEYWORDS: Multiplexing, Semiconductor lasers, Laser stabilization, Multiplexers, High power lasers, Dense wavelength division multiplexing, Temperature metrology, Laser development, Dielectric mirrors, Mirrors

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Proceedings Article | 22 February 2012 Paper

Paper

Highly precise and robust packaging of optical components

Michael Leers, Matthias Winzen, Erik Liermann, Heinrich Faidel, Thomas Westphalen, Jörn Miesner, Jörg Luttmann, Dieter Hoffmann

Proceedings Volume 8244, 824404 (2012) https://doi.org/10.1117/12.920016

KEYWORDS: Optical components, Resistance, Packaging, Laser systems engineering, Tolerancing, Temperature metrology, LIDAR, Thermography, Aerospace engineering, Laser welding

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Proceedings Article | 24 February 2009 Paper

Paper

Packaging influence on laser bars of different dimensions

Thomas Westphalen, Michael Leers, Marcel Werner, Martin Traub, Hans-Dieter Hoffmann, Ralf Ostendorf

Proceedings Volume 7198, 71980K (2009) https://doi.org/10.1117/12.810483

KEYWORDS: Resonators, Packaging, Semiconductor lasers, Reliability, Laser development, High power lasers, Polarization, Laser resonators, Resistance, Electroluminescence

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Proceedings Article | 24 February 2009 Paper

Paper

Automated assembly of fast-axis collimation (FAC) lenses for diode laser bar modules

Jörn Miesner, Andre Timmermann, Jens Meinschien, Bernhard Neumann, Steve Wright, Tolga Tekin, Henning Schröder, Thomas Westphalen, Felix Frischkorn

Proceedings Volume 7198, 71980G (2009) https://doi.org/10.1117/12.809190

KEYWORDS: Cameras, Semiconductor lasers, Image processing, Micro optics, Imaging systems, Laser systems engineering, Collimation, Near field, Optical components, Ultraviolet radiation

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Proceedings Article | 24 February 2009 Paper

Paper

Investigation of n-side cooling in regards to bar geometry and packaging style of diode laser

Michael Leers, Thomas Westphalen, Rajiv Pathak, Christian Scholz

Proceedings Volume 7198, 71980H (2009) https://doi.org/10.1117/12.809508

KEYWORDS: Resistance, Packaging, Semiconductor lasers, Copper, Resonators, Laser resonators, Laser welding, Temperature metrology, Metals, High power diode lasers

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Proceedings Article | 24 February 2009 Paper

Paper

High wall-plug efficiency diode lasers with an Al-free active region at 975 nm

N. Michel, M. Calligaro, Y. Robert, M. Lecomte, O. Parillaud, M. Krakowski, T. Westphalen, M. Traub

Proceedings Volume 7198, 71981H (2009) https://doi.org/10.1117/12.808426

KEYWORDS: Quantum wells, Continuous wave operation, Waveguides, Semiconductor lasers, Internal quantum efficiency, Gallium arsenide, Reflectivity, High power lasers, Transparency, Aluminum

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Proceedings Article | 13 February 2008 Paper

Paper

Emitter resolved analysis of packaged laser bars

Thomas Westphalen, Michael Leers, Christian Scholz, Konstantin Boucke

Proceedings Volume 6876, 68760O (2008) https://doi.org/10.1117/12.764576

KEYWORDS: Semiconductor lasers, Copper, Indium, Packaging, Resistance, Polarization, Laser applications, Reliability, Electroluminescence, Laser welding

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Proceedings Article | 8 February 2007 Paper

Paper

Next generation of cooling approaches for diode laser bars

Michael Leers, Konstantin Boucke, Christian Scholz, Thomas Westphalen

Proceedings Volume 6456, 64561A (2007) https://doi.org/10.1117/12.701896

KEYWORDS: Copper, Diamond, Semiconductor lasers, Resistance, Corrosion, Single crystal X-ray diffraction, Composites, Polarization, Laser applications, Packaging

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Showing 5 of 15 publications

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