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Performance modelling of optical refrigerators.

Author(s) : MILLS G., MORD A.

Summary

Optical refrigeration using anti-Stokes fluorescence in solids has several advantages over more conventional techniques including lowmass, low volume, low cost and no vibration. It also has the potential of allowing miniature cryocoolers on the scale of a few cubic centimetres. It has been the topic of analysis and experimental work by several organizations. In 2003, the authors demonstrated the first optical refrigerator. They have developed a comprehensive system-level performance model of optical refrigerators. Their current version models the refrigeration cycle based on the fluorescent material emission and absorption data at ambient and reduced temperature for the ytterbium-ZBLAN glass (Yb:ZBLAN) cooling material. It also includes the heat transfer into the refrigerator cooling assembly due to radiation and conduction. Modelling results which reveal the interplay between size, power input, and cooling load are reported. This interplay results in practical size limitations using Yb:ZBLAN. [Reprinted with permission from Elsevier. Copyright, 2006].

Details

  • Original title: Performance modelling of optical refrigerators.
  • Record ID : 2006-2749
  • Languages: English
  • Publication date: 2006/02
  • Source: Source: Cryogenics/Proc. Space Cryog. Workshop, Colorado Springs
    vol. 46; n. 2-3; 176-182; fig.; 10 ref.

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