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Proceedings Paper

100 W/100 um passively cooled fiber coupled diode laser at 976 nm based on multiple 100 um single emitters
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Paper Abstract

We developed a high brightness fiber coupled diode laser module based on single diode lasers providing more than 60 Watts output power from a 100 micron fiber at the optimum fiber laser pump wavelength of 976 nm. The advantage of using multiple single emitters on a submount compared to using bars or mini bars is the direct fiber coupling by use of optical stacking and the fact that no beam transformation is needed. We achieved best brightness with a high fill factor, optical efficiency of more then 80% and wall-plug efficiency of more then 40%. The use of single emitters on a submount also extends the life span due to reduced failure (xn vs. x) per device (n individual emitters vs. n emitters on a bar (mini array)). Low drive current enables modulation.

Paper Details

Date Published: 23 February 2009
PDF: 7 pages
Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71980P (23 February 2009); doi: 10.1117/12.810487
Show Author Affiliations
Marcel Werner, Fraunhofer Institute for Laser Technology (Germany)
Christian Wessling, Fraunhofer Institute for Laser Technology (Germany)
Stefan Hengesbach, Fraunhofer Institute for Laser Technology (Germany)
Martin Traub, Fraunhofer Institute for Laser Technology (Germany)
Hans-Dieter Hoffmann, Fraunhofer Institute for Laser Technology (Germany)


Published in SPIE Proceedings Vol. 7198:
High-Power Diode Laser Technology and Applications VII
Mark S. Zediker, Editor(s)

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