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Proceedings Paper

The role of absorption saturation in optical refrigeration (Conference Presentation)

Paper Abstract

The role of pump saturation in high-power optical refrigeration is investigated. Employing both Z-scan and intensity-dependent PL techniques, we measure the pump saturation intensity in Yb:YLF versus the temperature. We find that the absorption efficiency, and consequently the cooling efficiency can be limited at cryogenic temperatures under power scaling (when substantial heat lift is desired) unless multi-pass pumping schemes are tailored to control the average pump intensity inside the crystal.

Paper Details

Date Published: 9 March 2020
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Proc. SPIE 11298, Photonic Heat Engines: Science and Applications II, 1129809 (9 March 2020); doi: 10.1117/12.2547681
Show Author Affiliations
Azzurra Volpi, The Univ. of New Mexico (United States)
Jackson Kock, The Univ. of New Mexico (United States)
Alexander R. Albrecht, The Univ. of New Mexico (United States)
Markus P. Hehlen, Los Alamos National Lab. (United States)
Richard I. Epstein, The Univ. of New Mexico (United States)
Mansoor Sheik-Bahae, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 11298:
Photonic Heat Engines: Science and Applications II
Denis V. Seletskiy; Richard I. Epstein; Mansoor Sheik-Bahae, Editor(s)

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