7 March 2016 Laser cooling performance of Yb3+-doped LuLiF4 crystal
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When pumped with a 10 W 1020 nm fiber laser, a temperature drop of 60.4 K from room temperature of a crystal in the vacuum is observed by utilizing the differential luminescence thermometry measurement method. The crystal is doped with 5wt.%Yb 3+ : LuLiF4 and has a size of 3×3×5 mm3. The cooling power and the cooling efficiency of sample is estimated to be ~50.6 mW and ~2.53%, respectively, at the 232.6 K temperature.
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Biao Zhong, Hao Luo, Lin Chen, Yanling Shi, Jianping Yin, "Laser cooling performance of Yb3+-doped LuLiF4 crystal", Proc. SPIE 9765, Optical and Electronic Cooling of Solids, 976506 (7 March 2016); doi: 10.1117/12.2213900; https://doi.org/10.1117/12.2213900

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