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

Denis V. Seletskiy; Seth D. Melgaard; Mansoor Sheik-Bahae; Stefano Bigotta; Alberto DiLieto; Mauro Tonelli; Richard I. Epstein

doi:10.1117/12.845049

18 February 2010 Optical refrigeration breaks the Peltier barrier: cooling Yb:YLF to 155K

Denis V. Seletskiy, Seth D. Melgaard, Mansoor Sheik-Bahae, Stefano Bigotta, Alberto DiLieto, Mauro Tonelli, Richard I. Epstein

Author Affiliations +

Proceedings Volume 7614, Laser Refrigeration of Solids III; 761403 (2010) https://doi.org/10.1117/12.845049
Event: SPIE OPTO, 2010, San Francisco, California, United States

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.

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Denis V. Seletskiy, Seth D. Melgaard, Mansoor Sheik-Bahae, Stefano Bigotta, Alberto DiLieto, Mauro Tonelli, and Richard I. Epstein "Optical refrigeration breaks the Peltier barrier: cooling Yb:YLF to 155K", Proc. SPIE 7614, Laser Refrigeration of Solids III, 761403 (18 February 2010); https://doi.org/10.1117/12.845049

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