High-power, high-brightness 100W QCW diode laser at 940nm

C. Fiebig; G. Erbert; W. Pittroff; H. Wenzel; A. Maaßdorf; S. Einfeldt; G. Tränkle

doi:10.1117/12.699966

7 February 2007 High-power, high-brightness 100W QCW diode laser at 940nm

C. Fiebig, G. Erbert, W. Pittroff, H. Wenzel, A. Maaßdorf, S. Einfeldt, G. Tränkle

Proceedings Volume 6456, High-Power Diode Laser Technology and Applications V; 64560K (2007) https://doi.org/10.1117/12.699966
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

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.

Citation Download Citation

C. Fiebig, G. Erbert, W. Pittroff, H. Wenzel, A. Maaßdorf, S. Einfeldt, and G. Tränkle "High-power, high-brightness 100W QCW diode laser at 940nm", Proc. SPIE 6456, High-Power Diode Laser Technology and Applications V, 64560K (7 February 2007); https://doi.org/10.1117/12.699966

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