Laser cooling using anti-stokes fluorescence in Yb3+-doped fluorozirconate glasses |
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Authors: | Xu Tian-ming Li Cheng-fang Zhou Xiao Zhong Jia-cheng |
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Institution: | (1) School of Physics and Technology, Wuhan University, 430072 Wuhan, Hubei, China;(2) Infrared Material Institute, Wuhan University, 430072 Wuhan, Hubei, China |
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Abstract: | The fluorozirconate glasses ZBLANP (ZrF4−BaF2−LaF3−NaF−PbF2) doped with different Yb3+ concentration were prepared. The Raman spectra and absorption spectra are measured to substantiate the existence of phonon-assisted
emission. After analyzing the normalized absorption spectra of samples with different Yb3+-doped concentration, we calculated the maximum cooling effect in the 3 wt% Yb3+-doped sample pumped at 1 012.5 nm. The corresponding cooling capability is about −4.09 °C/W and the cooling efficiency reaches
1.76%.
Foundation item: Supported by the Key Science Foundation of Wuhan (9601P0223)
Biography: Xu Tian-ming (1978-), female, Master candidate, research direction: information optics and nonlinear optics. |
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Keywords: | anti-Stokes fluorescence Yb3+-doped ZBLANP glass cooling efficiency |
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