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Proceedings Paper

Optical refrigeration breaks the Peltier barrier: cooling Yb:YLF to 155K
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Paper Abstract

We demonstrate first cryogenic operation in a Ytterbium doped YLF crystal by means of an optical refrigeration. We have achieved cooling to 155 Kelvin absolute temperature with heat lift of 90 mW, exceeding performance of multi-stack thermo-electric coolers. This progress was possible by pumping the system near the Stark-manifold resonance of highly pure Yb:YLF crystal and careful thermal management in the cooling experiment. Detailed spectroscopic analysis demonstrated that cooling to 110 Kelvin is currently possible if pumped exactly on that resonance.

Paper Details

Date Published: 18 February 2010
PDF: 6 pages
Proc. SPIE 7614, Laser Refrigeration of Solids III, 761403 (18 February 2010); doi: 10.1117/12.845049
Show Author Affiliations
Denis V. Seletskiy, The Univ. of New Mexico (United States)
Seth D. Melgaard, The Univ. of New Mexico (United States)
Mansoor Sheik-Bahae, The Univ. of New Mexico (United States)
Stefano Bigotta, NEST-CNR-INFM, Univ. di Pisa (Italy)
Alberto DiLieto, NEST-CNR-INFM, Univ. di Pisa (Italy)
Mauro Tonelli, NEST-CNR-INFM, Univ. di Pisa (Italy)
Richard I. Epstein, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 7614:
Laser Refrigeration of Solids III
Richard I. Epstein; Mansoor Sheik-Bahae, Editor(s)

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