掺重稀土钒酸钇RE∶YVO_4晶体的光谱性质  

Spectroscopic Properties of Rare Earth-doped RE:YVO_4 Crystals

作　　者：林树坤[1] 陈燕梅[1] 张莉珍 

机构地区：[1]福州大学化学化工学院,福建福州350002

出　　处：《光谱学与光谱分析》2003年第4期665-668,共4页Spectroscopy and Spectral Analysis

基　　金：福建省科技厅项目资助 (K2 0 0 1 0 0 9)

摘　　要：采用Czochralski法生长了均匀透明的Tm :YVO4,Tm :Er:YVO4和Tm :Yb :YVO4晶体 ,测量了其室温下吸收光谱 ,研究了晶体中掺杂稀土离子的光谱性质。根据Judd Ofelt理论拟合出晶体场唯象强度参数 :Ω2=1 13× 10 -2 0 cm2 ,Ω4=1 6 3× 10 -2 0 cm2 ,Ω6=0 6 5× 10 -2 0 cm2 。The transparent and homogeneous RE:YVO4 crystals have been grown by Czochralski method. The room temperature absorption spectra have been measured. The spectroscopic properties have been studied for rare earth-doped (Tm3+, Er3+, Yb3+)RE: YVO4. According to Judd-Ofelt theory, the spectral strength parameters: Omega(2) = 1.13 x 10(-20) cm(2), Omega(4) = 1.63 x 10(-20) cm(2) and Omega = 0.65 x 10(-20) cm(2) of Er3+ ion have been fitted, and the radiative transtition probabilities A(JJ'), oscillator strengths f(JJ'), and radiative lifetime tau have been calculated. We report the results of cross energy transfer processes between Tm3+ and Yb3+ ions, and the sensitization between Tm3+ and Er3+ ions.

关 键 词：掺杂 稀土离子 钒酸钇 RE:YVO4晶体 光谱性质 激光晶体 吸收光谱 Judd-Ofdt理论 激光材料 

分 类 号：O614.322[理学—无机化学] TN244[理学—化学]