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Proceedings Paper

Improving lifetime of quasi-CW laser diode arrays for pumping 2-micron solid state lasers
Author(s): Farzin Amzajerdian; Byron L. Meadows; Nathaniel R. Baker; Bruce W. Barnes; Upendra N. Singh; Michael J. Kavaya
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Paper Abstract

Operating high power laser diode arrays in long pulse regime of about 1 msec, which is required for pumping 2-micron thulium and holmium-based lasers, greatly limits their useful lifetime. This paper describes performance of laser diode arrays operating in long pulse mode and presents experimental data on the active region temperature and pulse-to-pulse thermal cycling that are the primary cause of their premature failure and rapid degradation. This paper will then offer a viable approach for determining the optimum design and operational parameters leading to the maximum attainable lifetime.

Paper Details

Date Published: 10 May 2007
PDF: 8 pages
Proc. SPIE 6550, Laser Radar Technology and Applications XII, 655010 (10 May 2007); doi: 10.1117/12.724777
Show Author Affiliations
Farzin Amzajerdian, NASA Langley Research Ctr. (United States)
Byron L. Meadows, NASA Langley Research Ctr. (United States)
Nathaniel R. Baker, Lockheed Martin Engineering and Science Co. (United States)
Bruce W. Barnes, NASA Langley Research Ctr. (United States)
Upendra N. Singh, NASA Langley Research Ctr. (United States)
Michael J. Kavaya, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 6550:
Laser Radar Technology and Applications XII
Monte D. Turner; Gary W. Kamerman, Editor(s)

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