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Chinese Optics Letters

Chinese Optics Letters


  • Editor: Zhizhan Xu
  • Vol. 10, Iss. 3 — Mar. 1, 2012
  • pp: 031401–

Mechanism of refrigeration cycle on laser cooling of solids

Youhua Jia, Biao Zhong, and Jianping Yin  »View Author Affiliations

Chinese Optics Letters, Vol. 10, Issue 3, pp. 031401- (2012)

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A simple model is developed to study the laser cooling of solids. The condition of laser cooling of a solid is developed. By using some parameters of the Yb<sup>3+</sup> ion, which is most widely used in laser cooling, we then calculate the cooling power and the cooling efficiency. In order to make a more precise analysis, the effect of fluorescent reabsorption, which is unavoidable in the cooling process, is discussed using the random walk model. Taking Tm<sup>3+</sup> ion as an example, we derive the average number of absorption events and determine the change in quantum efficiency due to reabsorption. Finally, we obtain the red-shift of the fluorescent wavelength and the requirement of sample dimension.

© 2012 Chinese Optics Letters

OCIS Codes
(140.3320) Lasers and laser optics : Laser cooling
(160.2540) Materials : Fluorescent and luminescent materials
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Lasers and Laser Optics

Youhua Jia, Biao Zhong, and Jianping Yin, "Mechanism of refrigeration cycle on laser cooling of solids," Chin. Opt. Lett. 10, 031401- (2012)

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