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Proceedings Paper

kW-class direct diode laser for sheet metal cutting based on commercial pump modules
Author(s): U. Witte; F. Schneider; C. Holly; A. Di Meo; D. Rubel; F. Boergmann; M. Traub; D. Hoffmann; S. Drovs; T. Brand; A. Unger
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Paper Abstract

We present a direct diode laser with an optical output power of more than 800 W ex 100 μm with an NA of 0.17. The system is based on 6 commercial pump modules that are wavelength stabilized by use of VBGs. Dielectric filters are used for coarse and dense wavelength multiplexing. Metal sheet cutting tests were performed in order to prove system performance and reliability. Based on a detailed analysis of loss mechanisms, we show that the design can be easily scaled to output powers in the range of 2 kW and to an optical efficiency of 80%.

Paper Details

Date Published: 22 February 2017
PDF: 13 pages
Proc. SPIE 10086, High-Power Diode Laser Technology XV, 1008608 (22 February 2017); doi: 10.1117/12.2252145
Show Author Affiliations
U. Witte, Fraunhofer-Institut für Lasertechnik (Germany)
F. Schneider, Fraunhofer-Institut für Lasertechnik (Germany)
C. Holly, RWTH Aachen Univ. (Germany)
A. Di Meo, Fraunhofer-Institut für Lasertechnik (Germany)
D. Rubel, Fraunhofer-Institut für Lasertechnik (Germany)
F. Boergmann, Fraunhofer-Institut für Lasertechnik (Germany)
M. Traub, Fraunhofer-Institut für Lasertechnik (Germany)
D. Hoffmann, Fraunhofer-Institut für Lasertechnik (Germany)
S. Drovs, DILAS Diodenlaser GmbH (Germany)
T. Brand, DILAS Diodenlaser GmbH (Germany)
A. Unger, DILAS Diodenlaser GmbH (Germany)

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

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