YAlO_3:(Nd^(3+),Lu_(3+))单晶的各向异性吸收光谱  

ANISOTROPIC ABSORPTION SPECTRA IN YALO 3:(Nd 3+ AND Lu 3+ )SINGLE CRYSTAL

作　　者：张兴宏[1,2,3] 江炳熙[1,2,3] 徐建成 林秀华[1,2,3] 王占国 

机构地区：[1]中国科学院半导体研究所半导体材料科学实验室 [2]厦门大学物理学系 [3]首都师范大学物理系

出　　处：《光谱学与光谱分析》1998年第2期144-148,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金

摘　　要：在室温下测量了ＹＡｌＯ３：（Ｎｄ３＋，Ｌｕ３＋）单晶三个晶轴方向的吸收光谱。其吸收谱带强度明显呈各向异性。将Ｊｕｄｄ－Ｏｆｅｌｔ理论加以修正，并扩展应用于处理各晶轴方向的吸收光谱。计算出相应于三个晶轴方向的各光谱带吸收截面和电偶极振子强度，求得三组跃迁强度唯象参数Ωｔ。Absorption spectra of YAlO 3:(Nd 3+ ,Lu 3+ ) single crystals for the three crystallographic axes were investigated at room temperature.The absorption band intensities distinctly revealed the anisotropy of YAlO 3:(Nd 3+ ,Lu 3+ ).The Judd Ofelt theory was modified and applied to the treatment of the anisotropic absorption spectra.The absorption cross sections and the electric dipole oscillator strengths of various bands were calculated for three crystallographic axes of YAlO 3:(Nd 3+ ,Lu 3+ ) crystals.Three sets of phenomenological parameters Ω t(α) were determined.The validity of the modified Judd Ofelt approach is discussed in detail.Moreover,we explained the anisotropy of the optical absorption of YAlO 3:(Nd 3+ ,Lu 3+ ).

关 键 词：铝酸钇晶体 激光晶体 吸收光谱 各向异性 

分 类 号：TN244[电子电信—物理电子学]