Nd^(3+):Gd_3Ga_5O_(12)单晶的能级和晶体场计算(英文)  

Energy levels and crystal-field calculation for Nd^(3+) in Gd_3Ga_5O_(12) single crystal

作　　者：高进云[1,2] 张庆礼[1] 胡流森[3] 闻军[3] 夏上达[3] 郭常新[3] 殷绍唐[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,安徽省光子器件与材料重点实验室,安徽合肥230031 [2]中国科学院研究生院,北京10049 [3]中国科学技术大学物理系,安徽合肥230026

出　　处：《量子电子学报》2011年第2期218-229,共12页Chinese Journal of Quantum Electronics

基　　金：the National Natural Science Foundation of China(50772112,50872135,50932005);Knowledge Innovation Program of Chinese Academy of Sciences(YYYJ-1002)

摘　　要：测试了Nd^(3+):GGG单晶在可见和近红外波段的吸收光谱,并分析指认了它的实验能级,通过从头计算的DV-Xα方法计算得到了它的晶体场参数和旋轨耦合参数。用Nd^(3+):GGG在77 K和300 K的156个、88个实验能级,拟合了它的自由离子参数和晶体场参数,均方根误差(即拟合精度)σ分别为15.79 cm^(-1)和11.48 cm^(-1)。结果表明晶体场参数的拟合结果和从头计算值符合的很好。最后比较了拟合得到的Nd^(3+):GGG和已报道Nd^(3+):YAG的自由离子参数和晶体场参数。The absorption spectrum of Nd^3＋ ions doped into Gd3Ga5O12（GGG） single crystal was analyzed in the visible and near infrared region.Its crystal-field and spin-orbit parameters were calculated with the DV-Xαmethod,which belongs to an ab initio calculation.Meanwhile,its free-ions and crystal-field parameters were also been fitted to the experimental energy levels in 300 K and 77 K with the root mean square deviation of 15.79 cm^-1 and 11.48 cm^-1,respectively.According to the crystal-field calculations, 156 levels of Nd^3＋ ions in 77 K and 88 levels of Nd^3＋ ions in 300 K were assigned.The results indicated that the fitted and calculated crystal-field parameters by DV-Xa are consistent very well.Finally,the fitting results of free-ions and crystal-field parameters are compared with those already reported for Nd^3＋：YAG.

关 键 词：晶体 Nd^3+:GGG DV-Xα方法 能级 晶体场参数 

分 类 号：O482[理学—固体物理]