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

doi:10.1117/12.2252145

22 February 2017 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

Author Affiliations +

Proceedings Volume 10086, High-Power Diode Laser Technology XV; 1008608 (2017) https://doi.org/10.1117/12.2252145
Event: SPIE LASE, 2017, San Francisco, California, United States

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%.

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U. Witte, F. Schneider, C. Holly, A. Di Meo, D. Rubel, F. Boergmann, M. Traub, D. Hoffmann, S. Drovs, T. Brand, and A. Unger "kW-class direct diode laser for sheet metal cutting based on commercial pump modules", Proc. SPIE 10086, High-Power Diode Laser Technology XV, 1008608 (22 February 2017); https://doi.org/10.1117/12.2252145

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