Highly reliable high-efficiency wavelength-stabilized 885 nm diode laser bars

Paul Leisher; Ling Bao; Hua Huang; Jun Wang; Mark DeVito; Weimin Dong; Mike Grimshaw; David Balsley; Rob Martinsen; Mark DeFranza; Steve Patterson

doi:10.1117/12.820872

6 May 2009 Highly reliable high-efficiency wavelength-stabilized 885 nm diode laser bars

Paul Leisher, Ling Bao, Hua Huang, Jun Wang, Mark DeVito, Weimin Dong, Mike Grimshaw, David Balsley, Rob Martinsen, Mark DeFranza, Steve Patterson

Author Affiliations +

Proceedings Volume 7325, Laser Technology for Defense and Security V; 73250R (2009) https://doi.org/10.1117/12.820872
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

We report on the progress of highly-reliable, high-efficiency 885-nm diode laser bar arrays. Conduction-cooled hardsoldered bars rated to 60W and 57% conversion efficiency demonstrate >30,000 device hours under 1-sec on, 1-sec off hard pulse conditions failure-free. Microchannel-cooled bars rated to 100W and 62% efficiency demonstrate >100,000 accelerated device hours failure-free. Integrated volume Bragg grating fast axis lenses provide wavelength stabilization at low cost. Vertically stacked arrays (seven bars each) of such configuration are demonstrated with a 0.8 nm FWHM spectral width and rated to 700W, 53% conversion efficiency.

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Paul Leisher, Ling Bao, Hua Huang, Jun Wang, Mark DeVito, Weimin Dong, Mike Grimshaw, David Balsley, Rob Martinsen, Mark DeFranza, and Steve Patterson "Highly reliable high-efficiency wavelength-stabilized 885 nm diode laser bars", Proc. SPIE 7325, Laser Technology for Defense and Security V, 73250R (6 May 2009); https://doi.org/10.1117/12.820872

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