High-power long-wavelength (1.4 to 1.5 mm) laser array and stacked arrays

Zack Huang; Paul Crump; Trevor R. Crum; Mark A. DeVito; Jason Farmer; Michael Grimshaw; Scott A. Igl; Steve Macomber

doi:10.1117/12.533263

1 June 2004 High-power long-wavelength (1.4 to 1.5 mm) laser array and stacked arrays

Zack Huang, Paul Crump, Trevor R. Crum, Mark A. DeVito, Jason Farmer, Michael Grimshaw, Scott A. Igl, Steve Macomber

Proceedings Volume 5336, High-Power Diode Laser Technology and Applications II; (2004) https://doi.org/10.1117/12.533263
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

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.

Citation Download Citation

Zack Huang, Paul Crump, Trevor R. Crum, Mark A. DeVito, Jason Farmer, Michael Grimshaw, Scott A. Igl, and Steve Macomber "High-power long-wavelength (1.4 to 1.5 mm) laser array and stacked arrays", Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); https://doi.org/10.1117/12.533263

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