Demonstration of passively cooled high-power Yb fiber amplifier

Joshua Bradford; Justin Cook; Jose Enrique Antonio-Lopez; Larry Shah; Rodrigo Amezcua Correa; Martin Richardson

doi:10.1117/12.2290243

26 February 2018 Demonstration of passively cooled high-power Yb fiber amplifier

Joshua Bradford, Justin Cook, Jose Enrique Antonio-Lopez, Larry Shah, Rodrigo Amezcua Correa, Martin Richardson

Author Affiliations +

Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 105121G (2018) https://doi.org/10.1117/12.2290243
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

This work investigates the feasibility of passive cooling in high-power Yb amplifiers. Experimentally, an all-glass airclad step-index (ACSI) amplifier is diode-pumped with 400W and provides 200W power levels. With only natural convection to extract heat, core temperatures are estimated near 130°C with no degradation of performance relative to cooled architectures. Further, advanced analysis techniques allow for core temperature determination using thermal interferometry without the need for complicated stabilization or calibration.

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Citation Download Citation

Joshua Bradford, Justin Cook, Jose Enrique Antonio-Lopez, Larry Shah, Rodrigo Amezcua Correa, and Martin Richardson "Demonstration of passively cooled high-power Yb fiber amplifier", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105121G (26 February 2018); https://doi.org/10.1117/12.2290243

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