Advancements in high-power diode laser stacks for defense applications

Rajiv Pandey; David Merchen; Dean Stapleton; Steve Patterson; Heiko Kissel; Wilhlem Fassbender; Jens Biesenbach

doi:10.1117/12.916743

7 May 2012 Advancements in high-power diode laser stacks for defense applications

Rajiv Pandey, David Merchen, Dean Stapleton, Steve Patterson, Heiko Kissel, Wilhlem Fassbender, Jens Biesenbach

Proceedings Volume 8381, Laser Technology for Defense and Security VIII; 83810G (2012) https://doi.org/10.1117/12.916743
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

This paper reports on the latest advancements in vertical high-power diode laser stacks using micro-channel coolers, which deliver the most compact footprint, power scalability and highest power/bar of any diode laser package. We present electro-optical (E-O) data on water-cooled stacks with wavelengths ranging from 7xx nm to 9xx nm and power levels of up to 5.8kW, delivered @ 200W/bar, CW mode, and a power-conversion efficiency of >60%, with both-axis collimation on a bar-to-bar pitch of 1.78mm. Also, presented is E-O data on a compact, conductively cooled, hardsoldered, stack package based on conventional CuW and AlN materials, with bar-to-bar pitch of 1.8mm, delivering average power/bar >15W operating up to 25% duty cycle, 10ms pulses @ 45C. The water-cooled stacks can be used as pump-sources for diode-pumped alkali lasers (DPALs) or for more traditional diode-pumped solid-state lasers (DPSSL). which are power/brightness scaled for directed energy weapons applications and the conductively-cooled stacks as illuminators.

Citation Download Citation

Rajiv Pandey, David Merchen, Dean Stapleton, Steve Patterson, Heiko Kissel, Wilhlem Fassbender, and Jens Biesenbach "Advancements in high-power diode laser stacks for defense applications", Proc. SPIE 8381, Laser Technology for Defense and Security VIII, 83810G (7 May 2012); https://doi.org/10.1117/12.916743

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