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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. 11 — Nov. 1, 2013
  • pp: 3041–3047

Role of upconversion in optical refrigeration: A theoretical study of laser cooling with Ho3+ doped fluoride crystals

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

JOSA B, Vol. 30, Issue 11, pp. 3041-3047 (2013)

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We present a generalized model for optical refrigeration with Ho3+ doped fluoride crystals in which the dopant concentration dependent upconversion is considered. Based on the spectrum properties of candidate rare-earth ions (Ho3+, Tm3+, and Er3+) for optical refrigeration, a common criterion for upconversion assisted cooling is derived. The cooling performances of Ho3+:YLiF4 crystals are simulated to reveal the practical dopant concentration range for cooling. It is found that the optimal dopant concentration is determined by a balancing consideration of heat loads induced by background absorption and fluorescence quenching. The appropriate pump wavelengths for optical refrigeration with Ho3+:YLiF4 crystals are also indicated.

© 2013 Optical Society of America

OCIS Codes
(140.3320) Lasers and laser optics : Laser cooling
(140.6810) Lasers and laser optics : Thermal effects
(160.5690) Materials : Rare-earth-doped materials
(190.7220) Nonlinear optics : Upconversion
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 16, 2013
Revised Manuscript: September 18, 2013
Manuscript Accepted: September 24, 2013
Published: October 28, 2013

Guang-Zong Dong and Xin-Lu Zhang, "Role of upconversion in optical refrigeration: A theoretical study of laser cooling with Ho3+ doped fluoride crystals," J. Opt. Soc. Am. B 30, 3041-3047 (2013)

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