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Demonstration of passively cooled high-power Yb fiber amplifier
Author(s): Joshua Bradford; Justin Cook; Jose Enrique Antonio-Lopez; Larry Shah; Rodrigo Amezcua Correa; Martin Richardson
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Paper 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.

Paper Details

Date Published: 26 February 2018
PDF: 5 pages
Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105121G (26 February 2018); doi: 10.1117/12.2290243
Show Author Affiliations
Joshua Bradford, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Justin Cook, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Jose Enrique Antonio-Lopez, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Larry Shah, Luminar Technologies (United States)
Rodrigo Amezcua Correa, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Martin Richardson, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 10512:
Fiber Lasers XV: Technology and Systems
Ingmar Hartl; Adrian L. Carter, Editor(s)

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