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Advances in Optics and Photonics

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  • Editor: Bahaa E. A. Saleh
  • Vol. 4, Iss. 1 — Mar. 31, 2012

Cryogenic optical refrigeration

Denis V. Seletskiy, Markus P. Hehlen, Richard I. Epstein, and Mansoor Sheik-Bahae  »View Author Affiliations


Advances in Optics and Photonics, Vol. 4, Issue 1, pp. 78-107 (2012)
http://dx.doi.org/10.1364/AOP.4.000078


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Abstract

We review the field of laser cooling of solids, focusing our attention on the recent advances in cryogenic cooling of an ytterbium-doped fluoride crystal (Yb3+:YLiF4). Recently, bulk cooling in this material to 155 K has been observed upon excitation near the lowest-energy (E4–E5) crystal-field resonance of Yb3+. Furthermore, local cooling in the same material to a minimum achievable temperature of 110 K has been measured, in agreement with the predictions of the laser cooling model. This value is limited only by the current material purity. Advanced material synthesis approaches reviewed here would allow reaching temperatures approaching 80 K. Current results and projected improvements position optical refrigeration as the only viable all-solid-state cooling approach for cryogenic temperatures.

© 2012 OSA

OCIS Codes
(300.2530) Spectroscopy : Fluorescence, laser-induced
(020.3320) Atomic and molecular physics : Laser cooling

ToC Category:
Laser Cooling

History
Original Manuscript: November 9, 2011
Revised Manuscript: February 9, 2012
Manuscript Accepted: February 13, 2012
Published: March 22, 2012

Virtual Issues
(2012) Advances in Optics and Photonics

Citation
Denis V. Seletskiy, Markus P. Hehlen, Richard I. Epstein, and Mansoor Sheik-Bahae, "Cryogenic optical refrigeration," Adv. Opt. Photon. 4, 78-107 (2012)
http://www.opticsinfobase.org/aop/abstract.cfm?URI=aop-4-1-78


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