Optimized biasing of pump laser diodes in a highly reliable metrology source for long-duration space missions

Ilya Y. Poberezhskiy; Daniel H. Chang; Hernan Erlig

doi:10.1117/12.877605

21 February 2011 Optimized biasing of pump laser diodes in a highly reliable metrology source for long-duration space missions

Ilya Y. Poberezhskiy, Daniel H. Chang, Hernan Erlig

Author Affiliations +

Proceedings Volume 7918, High-Power Diode Laser Technology and Applications IX; 791807 (2011) https://doi.org/10.1117/12.877605
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

Optical metrology system reliability during a prolonged space mission is often limited by the reliability of pump laser diodes. We developed a metrology laser pump module architecture that meets NASA SIM Lite instrument optical power and reliability requirements by combining the outputs of multiple single-mode pump diodes in a low-loss, high port count fiber coupler. We describe Monte-Carlo simulations used to calculate the reliability of the laser pump module and introduce a combined laser farm aging parameter that serves as a load-sharing optimization metric. Employing these tools, we select pump module architecture, operating conditions, biasing approach and perform parameter sensitivity studies to investigate the robustness of the obtained solution.

Citation Download Citation

Ilya Y. Poberezhskiy, Daniel H. Chang, and Hernan Erlig "Optimized biasing of pump laser diodes in a highly reliable metrology source for long-duration space missions", Proc. SPIE 7918, High-Power Diode Laser Technology and Applications IX, 791807 (21 February 2011); https://doi.org/10.1117/12.877605

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