Nd^(3+):GdScO_(3)晶体场能级及拟合分析  

Nd^(3+):GdScO_(3)crystal field energy level and fitting

作　　者：樊颖 张庆礼[2,3] 高进云 高宇茜 黄磊 刘耀 Fan Ying;Zhang Qing-Li;Gao Jin-Yun;Gao Yu-Xi;Huang Lei;Liu Yao(Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China;Anhui Provincial Key Laboratory of Photonic Devices and Materials,Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Advanced Laser Technology Laboratory of Anhui Province,Hefei 230037,China;University of Science and Technology of China,Hefei 230022,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,合肥230601 [2]中国科学院合肥物质科学研究院,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,合肥230031 [3]先进激光技术安徽省实验室,合肥230037 [4]中国科学技术大学,合肥230022

出　　处：《物理学报》2024年第4期1-8,共8页Acta Physica Sinica

基　　金：国家重点研发计划(批准号:2022YFB3605700);国家自然科学基金(批准号:52272011,11875248);中国科学院青年创新促进会(批准号:2023463);安徽省实验室重点基金(批准号:AHL20220ZR04)资助的课题。

摘　　要：采用提拉法生长出了钕掺杂钪酸钆晶体(Nd^(3+):GdScO_(3)),通过低温吸收光谱和室温发射光谱,对其中Nd^(3+)的实验能级进行分析指认,确定了Nd^(3+):GdScO_(3)的66个实验Stark能级,拟合了其自由离子参数和晶体场参数,拟合均方根误差为13.17 cm^(–1).与Nd^(3+):YAP和Nd^(3+):YAG相比,Nd^(3+):GdScO_(3)的晶场强度较弱.弱的晶体场强度有可能是Nd^(3+):GdScO_(3)晶体具有优良激光特性的原因之一.本文数据集可在https://www.doi.org/10.57760/sciencedb.15702中访问获取.Gadolinium scandate(GdScO_(3))crystal has a perovskite structure,belonging to an orthogonal system,and its space group is Pnma(No.62).Due to the disordered distributions of Sc^(3+) and Gd^(3+) ions,different cation sites can be replaced by doped ions,which indicates that GdScO_(3)crystal has a high tolerance for structural distortion.Compared with other oxide crystals,GdScO_(3)crystal has lower phonon energy of about 452 cm–1,which reduces non-radiative relaxation between adjacent energy levels and has strong thermal stability.In addition,GdScO_(3)crystal birefringence is large,and as a laser material,it can eliminate the adverse effects caused by thermal birefringence,such as thermal depolarization loss.As an active ion,Nd^(3+)(4f^(3))is an ideal four-level system.Therefore,Nd^(3+):GdScO_(3)crystal has a broad application prospect as a laser crystal matrix material.However,the study of Nd^(3+):GdScO_(3)crystal field energy level fitting and crystal field parameters has not been reported to the authors’knowledge.Neodymium-doped gadolinium scandiate(Nd^(3+):GdScO_(3))crystal is grown by the Czochralski method.The absorption spectrum in a range of 250—2650 nm is tested at a low temperature(8 K),and the emission spectrum at room temperature is also tested.The experimental energy levels of Nd^(3+)are analyzed and 66 experimental Stark levels of Nd^(3+):GdScO_(3)are identified.For the doped trivalent rare earth ion crystals,the energy level structure of rare earth ion is related to its luminescence characteristics,so it is necessary to study its energy level structure.In recent decades,parametric crystal field models have been widely applied to various rare-earth ion doped garnet crystals.The parametric model is used to analyze and fit the crystal field energy levels of Nd^(3+)doped orthogonal GdScO_(3).The fitted root mean square error is 13.17 cm–1.The resulting free ion parameters and crystal field parameters are calculated and analyzed,and the crystal field intensity is calculated.Fitting results show that

关 键 词：Nd^(3+):GdScO_(3)晶体 晶体场参数 能级拟合 

分 类 号：O73[理学—晶体学]