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Proceedings Article

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

[+] Author Affiliations
C. Fiebig, G. Erbert, W. Pittroff, H. Wenzel, A. Maaßdorf, S. Einfeldt, G. Tränkle

Ferdinand-Braun-Institut (Germany)

Proc. SPIE 6456, High-Power Diode Laser Technology and Applications V, 64560K (February 07, 2007); doi:10.1117/12.699966
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From Conference Volume 6456

  • High-Power Diode Laser Technology and Applications V
  • Mark S. Zediker
  • San Jose, CA | January 20, 2007

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.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

C. Fiebig ; G. Erbert ; W. Pittroff ; H. Wenzel ; A. Maaßdorf, et al.
"High-power, high-brightness 100W QCW diode laser at 940nm", Proc. SPIE 6456, High-Power Diode Laser Technology and Applications V, 64560K (February 07, 2007); doi:10.1117/12.699966; http://dx.doi.org/10.1117/12.699966


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