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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 4 — Apr. 1, 2013
  • pp: 939–944

Energy transfer enhanced laser cooling in Ho3+ and Tm3+-codoped lithium yttrium fluoride

Guang-Zong Dong, Xin-Lu Zhang, and Li Li  »View Author Affiliations

JOSA B, Vol. 30, Issue 4, pp. 939-944 (2013)

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We report a theoretical scheme for laser cooling of solids based on energy transfer usually found in rare-earth codoped materials. The cooling scheme enables a large enhancement in the cooling efficiency with regard to the standard anti-Stokes fluorescence cooling. A Ho3+ and Tm3+-codoped low-phonon crystal (LiYF4) sample is investigated to find that the cooling efficiency increases, and then decreases with the increasing of the resonant absorption. The optimal cooling efficiency is predicted to exceed 5%. The maximum cooling power density could be promoted greatly by applying the codoped cooling scheme. The cooling scheme is also valid for other rare-earth (for example, Tm3+ and Er3+, or Er3+ and Yb3+) codoped materials.

© 2013 Optical Society of America

OCIS Codes
(140.3320) Lasers and laser optics : Laser cooling
(140.6810) Lasers and laser optics : Thermal effects
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
(260.2160) Physical optics : Energy transfer

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 30, 2012
Revised Manuscript: January 16, 2013
Manuscript Accepted: February 10, 2013
Published: March 14, 2013

Guang-Zong Dong, Xin-Lu Zhang, and Li Li, "Energy transfer enhanced laser cooling in Ho3+ and Tm3+-codoped lithium yttrium fluoride," J. Opt. Soc. Am. B 30, 939-944 (2013)

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