Special Section on Optical Refrigeration and Radiation-Balanced Lasers

Laser cooling of 5 mol. % Yb3+ : LuLiF4 crystal in air

[+] Author Affiliations
Biao Zhong, Yanling Shi

East China Normal University, State Key Laboratory of Precision Spectroscopy, No. 3663, North Zhongshan Road, Shanghai 200062, China

East China Normal University, School of Information Science and Technology, No. 500, Dongchuan Road, Shanghai 200241, China

Hao Luo, Jianping Yin

East China Normal University, State Key Laboratory of Precision Spectroscopy, No. 3663, North Zhongshan Road, Shanghai 200062, China

Opt. Eng. 56(1), 011102 (Aug 30, 2016). doi:10.1117/1.OE.56.1.011102
History: Received April 13, 2016; Accepted August 15, 2016
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Abstract.  We report the laser cooling performance of 5 mol. % Yb3+:LuLiF4 crystal in air. Both end faces of the crystal with a size of 3×3×5  mm3 are cut by Brewster angles. A temperature drop of 11 K (from room temperature) of the sample, pumped by a 3-W/1020-nm CW fiber laser, is observed by a thermal camera. The cooling power and efficiency of the sample are estimated to be 14.5  mW and 1.9%, respectively. Our experiment results show the prospect of this crystal with laser cooling and its potential applications in earth-based optical refrigeration devices.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Biao Zhong ; Hao Luo ; Yanling Shi and Jianping Yin
"Laser cooling of 5 mol. % Yb3+ : LuLiF4 crystal in air", Opt. Eng. 56(1), 011102 (Aug 30, 2016). ; http://dx.doi.org/10.1117/1.OE.56.1.011102


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