Materials for Optical Cryocoolers

Vibration-free cooling of detectors to cryogenic temperatures is critical for many terrestrial, airborne, and space-based instruments. Cooling of solids by anti-Stokes fluorescence is an emerging refrigeration technology that is inherently vibration-free and compact, and enables cooling of small loa...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2013-01, Vol.1 (45), p.7471-7478
Main Authors: Hehlen, Markus P., Sheik-Bahae, Mansoor, Epstein, Richard I., Melgaard, Seth D., Seletskiy, Denis V.
Format: Article
Language:English
Subjects:
Cooling
Cryogenic temperature
Crystal structure
Devices
Fluorescence
Laser cooling
Refrigeration
Refrigerators
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Summary:Vibration-free cooling of detectors to cryogenic temperatures is critical for many terrestrial, airborne, and space-based instruments. Cooling of solids by anti-Stokes fluorescence is an emerging refrigeration technology that is inherently vibration-free and compact, and enables cooling of small loads to cryogenic temperatures. In this Highlight, advances in laser-cooling of solids are discussed with a particular focus on the recent breakthrough laser cooling of Yb super(3+)-doped YLiF sub(4) crystals to 114 K. The importance of the material structure, composition, and purity of laser-cooling materials and their influence on the optical refrigerator device performance is emphasized.
ISSN:2050-7526
2050-7534
DOI:10.1039/c3tc31681e