Optical Properties of Pr^3＋-Doped Y2SiO5 Crystals  

作　　者：孙成林 李建福 胡长宏 蒋占魁 

机构地区：[1]Department of Physics, Jilin University, Changchun 130021 [2]Department of Physics, Yantai University, Yantai 246005 [3]Department of Physics, Linyi Normal University, Linyi 276000

出　　处：《Chinese Physics Letters》2006年第7期1915-1918,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10074020.

摘　　要：Optical properties of Pr^3＋ doped in Y2SiO5, including absorption spectra, emission spectra, and fluorescence decay, have been investigated with a special attention in the UV region. Broad band （270-350nm） UV fluorescence assigned to the transitions 4f5d → 4f^2 ^3Hj, ^3Fj is found. The spontaneous transition probabilities in the 4f^2 intraconfiguration are calculated by utilizing the 3udd-Ofelt theory, by which three phenomenological parameters （Ω2, Ω4, Ω6,） are obtained by fitting the absorption spectra. For the evaluation of transition probability of the interconfiguration 4f5d → 4f^2, a formula for electric dipole transition is employed. In comparison of the measured fluorescence lifetime with the calculated spontaneous radiative lifetime, the fluorescence quantum efficiency is deduced.Optical properties of Pr^3＋ doped in Y2SiO5, including absorption spectra, emission spectra, and fluorescence decay, have been investigated with a special attention in the UV region. Broad band （270-350nm） UV fluorescence assigned to the transitions 4f5d → 4f^2 ^3Hj, ^3Fj is found. The spontaneous transition probabilities in the 4f^2 intraconfiguration are calculated by utilizing the 3udd-Ofelt theory, by which three phenomenological parameters （Ω2, Ω4, Ω6,） are obtained by fitting the absorption spectra. For the evaluation of transition probability of the interconfiguration 4f5d → 4f^2, a formula for electric dipole transition is employed. In comparison of the measured fluorescence lifetime with the calculated spontaneous radiative lifetime, the fluorescence quantum efficiency is deduced.

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分 类 号：O734[理学—晶体学]