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Proceedings Paper

High-power long-wavelength (1.4 to 1.5 mm) laser array and stacked arrays
Author(s): Zack Huang; Paul Crump; Trevor R. Crum; Mark A. DeVito; Jason Farmer; Michael Grimshaw; Scott A. Igl; Steve Macomber
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Paper Abstract

We have demonstrated record high cw and quasi-cw operation of InP-based 1.5 μm laser arrays (bars) and water-cooled stacks. High-efficiency and high-power operation were achieved through device design optimization including the multi-quantum well design, crystal growth process, doping profile, and material composition. Internal quantum efficiency, mode loss, gain parameters, and temperature sensitivity parameters are reported. Single-stripe devices produced 3 watts of cw output power and 35 percent electrical-to-optical efficiency. We demonstrated 40 watts of cw power from single bars on water-cooled copper-microchannel heatsinks. A stack of 20 bars that were collimated using fast axis microlenses achieved greater than 350 watts of cw power.

Paper Details

Date Published: 1 June 2004
PDF: 8 pages
Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); doi: 10.1117/12.533263
Show Author Affiliations
Zack Huang, nLight Photonics Corp. (United States)
Paul Crump, nLight Photonics Corp. (United States)
Trevor R. Crum, nLight Photonics Corp. (United States)
Mark A. DeVito, nLight Photonics Corp. (United States)
Jason Farmer, nLight Photonics Corp. (United States)
Michael Grimshaw, nLight Photonics Corp. (United States)
Scott A. Igl, nLight Photonics Corp. (United States)
Steve Macomber, nLight Photonics Corp. (United States)

Published in SPIE Proceedings Vol. 5336:
High-Power Diode Laser Technology and Applications II
Mark S. Zediker, Editor(s)

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