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Proceedings Paper

High-power, high-brightness 100W QCW diode laser at 940nm
Author(s): C. Fiebig; G. Erbert; W. Pittroff; H. Wenzel; A. Maaßdorf; S. Einfeldt; G. Tränkle
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Paper Abstract

We demonstrate 940nm diode lasers with more than 100W QCW output power having an aperture width 5 to 10 times smaller than commonly used 10mm bars. We used a super-large vertical waveguide structure to reduce the facet load. The waveguide design results in a very small vertical divergence of only 14° FWHM (24° including 95% of power). The threshold current of a device with 1mm wide aperture is about 8A and the slope efficiency is above 70%. The lateral far field width is below 10°, including 95% of power, and the wall plug efficiency is around 50% at 100W output power.

Paper Details

Date Published: 7 February 2007
PDF: 8 pages
Proc. SPIE 6456, High-Power Diode Laser Technology and Applications V, 64560K (7 February 2007); doi: 10.1117/12.699966
Show Author Affiliations
C. Fiebig, Ferdinand-Braun-Institut (Germany)
G. Erbert, Ferdinand-Braun-Institut (Germany)
W. Pittroff, Ferdinand-Braun-Institut (Germany)
H. Wenzel, Ferdinand-Braun-Institut (Germany)
A. Maaßdorf, Ferdinand-Braun-Institut (Germany)
S. Einfeldt, Ferdinand-Braun-Institut (Germany)
G. Tränkle, Ferdinand-Braun-Institut (Germany)

Published in SPIE Proceedings Vol. 6456:
High-Power Diode Laser Technology and Applications V
Mark S. Zediker, Editor(s)

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