【作者】 高进云； 张庆礼； 胡流森； 闻军； 夏上达； 郭常新； 殷绍唐；

【Author】 GAO Jin-yun;ZHANG Qing-li;HU Liu-sen;WEN Jun;XIA Shang-da;GUO Chang-xin;YIN Shao-tang;Anhui Provincial Key Laboratory of Photonic Devices and Materials,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences;Graduate School of Chinese Academy of Sciences;Department of Physics,University of Science and Technology of China;

【机构】 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； 中国科学院研究生院； 中国科学技术大学物理系；

【摘要】 测试了Nd³⁺: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Nd³⁺:GGG在77 K和300K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Nd³⁺:GGG和已报道Nd³⁺:YAG的自由离子参数和晶体场参数。更多还原

【Abstract】 The absorption spectrum of Nd³⁺ 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-Xa method,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 Nd³⁺ ions in 77 K and 88 levels of Nd³⁺ ions in 300 K were assigned.The results indicated that the fitted and calculated crystal-field parameters by DV-Xα are consistent very well.Finally,the fitting results of free-ions and crystal-field parameters are compared with those already reported for Nd³⁺:YAG.更多还原