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Proceedings Paper

kW-class diode laser bars
Author(s): S. G. Strohmaier; G. Erbert; A. H. Meissner-Schenk; M. Lommel; B. Schmidt; T. Kaul; M. Karow; P. Crump
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Paper Abstract

Progress will be presented on ongoing research into the development of ultra-high power and efficiency bars achieving significantly higher output power, conversion efficiency and brightness than currently commercially available. We combine advanced InAlGaAs/GaAs-based epitaxial structures and novel lateral designs, new materials and superior cooling architectures to enable improved performance. Specifically, we present progress in kilowatt-class 10-mm diode laser bars, where recent studies have demonstrated 880 W continuous wave output power from a 10 mm x 4 mm laser diode bar at 850 A of electrical current and 15°C water temperature. This laser achieves < 60% electro-optical efficiency at 880 W CW output power.

Paper Details

Date Published: 27 February 2017
PDF: 6 pages
Proc. SPIE 10086, High-Power Diode Laser Technology XV, 100860C (27 February 2017); doi: 10.1117/12.2250383
Show Author Affiliations
S. G. Strohmaier, TRUMPF Laser GmbH (Germany)
G. Erbert, TRUMPF Laser GmbH (Germany)
A. H. Meissner-Schenk, TRUMPF Laser GmbH (Germany)
M. Lommel, TRUMPF Laser GmbH (Germany)
B. Schmidt, TRUMPF Photonics (United States)
T. Kaul, Leibniz Institut für Höchstfrequenztechnik (Germany)
M. Karow, Leibniz Institut für Höchstfrequenztechnik (Germany)
P. Crump, Leibniz Institut für Höchstfrequenztechnik (Germany)

Published in SPIE Proceedings Vol. 10086:
High-Power Diode Laser Technology XV
Mark S. Zediker, Editor(s)

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