Qualification of laser diode arrays for space applications

Details Qualification of laser diode arrays for space applications Qualification of laser diode arrays for space applications

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spie.7193e...4t&link_type=abstract

Solid State Lasers XVIII: Technology and Devices. Edited by Clarkson, W. Andrew; Hodgson, Norman; Shori, Ramesh K.. Proceedings

Physics

Scientific paper

In the recent past, NASA's space-borne laser missions have been dominated by low repetition rate (<100Hz), Q-switched Nd:YAG lasers pumped by quasi-continuous wave (QCW) 808 nm laser diode arrays (LDA). QCW LDA reliability data is limited and their mechanisms of failure is poorly understood. Our group has been working in gathering statistically significant data on these devices and have developed testing strategies to achieve mission success in a cost-effective manner. In this paper, we present our approach for qualifying the LDAs for the Lunar Orbiter Laser Altimeter (LOLA) instrument scheduled to launch aboard the Lunar Reconnaissance Orbiter (LRO) mission. We describe our strategy to mitigate risk due to LDA failure given cost and schedule constraints. The results from extended testing of multiple LDAs in air and in vacuum are also presented.

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