Pr^(3+)掺杂碱土混合氟化物激光晶体的生长与发光性能研究  

Growth and Luminescence Properties of Pr^(3+)Doped Alkaline Earth Mixed Fluoride Laser Crystals

作　　者：王无敌 王庆国[1] 薛艳艳 唐慧丽[1] 徐子寒 张晨波 房前成 吴锋[1] 罗平[1] 徐晓东 苏良碧[3] 李岩 韩建峰 逯占文 徐军[1] WANG Wudi;WANG Qingguo;XUE Yanyan;TANG Huili;XU Zihan;ZHANG Chenbo;FANG Qiancheng;WU Feng;LUO Ping;XU Xiaodong;SU Liangbi;LI Yan;HAN Jianfeng;LU Zhanwen;XU Jun(School of Physics Science and Engineering,Tongji University,Shanghai 200092,China;School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou 221116,China;Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China;Linton Kayex Technology Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]同济大学物理科学与工程学院,上海200092 [2]江苏师范大学物理与电子工程学院,徐州221116 [3]中国科学院上海硅酸盐研究所,上海201899 [4]连城凯科斯科技有限公司,无锡214000

出　　处：《人工晶体学报》2023年第7期1258-1269,共12页Journal of Synthetic Crystals

基　　金：国家重点研发计划(2022YFB3605701);国家自然科学基金(61621001,62075166,61805177)。

摘　　要：采用多孔坩埚温度梯度法生长了0.6%Pr∶Ca_(x)Sr_(1-x)F_(2)(x=0,0.3,0.5,0.7,1.0)和0.6%Pr,5%R∶Ca_(0.5)Sr_(0.5)F_(2)(R=Y,Lu,Gd)系列碱土氟化物激光晶体,对其晶体结构、吸收和可见波段的荧光光谱及荧光衰减寿命进行了系统研究。通过吸收截面、发射截面、荧光寿命、荧光半峰全宽等光谱参数分析发现,0.6%Pr,5%Y∶Ca_(0.5)Sr_(0.5)F_(2)混晶与其他掺杂混晶相比,具有最佳的光谱效果,443 nm处吸收截面和640 nm处红光发射截面分别为1.63×10^(-20)和3.39×10^(-20)cm^(2),相应荧光半峰全宽和荧光寿命分别为4.50 nm和42.8μs,光谱参数与0.6%Pr∶Ca_(x)Sr_(1-x)F_(2)(x=0,0.3,0.5,0.7,1.0)混晶相比有显著的提升。结果表明,0.6%Pr,5%Y∶Ca_(0.5)Sr_(0.5)F_(2)晶体具有极大的潜力作为新型Pr^(3+)掺杂宽带激光材料的增益介质。In this paper,0.6%Pr∶Ca_(x)Sr_(1-x)F_(2)(x=0,0.3,0.5,0.7,1.0)and 0.6%Pr,5%R∶Ca_(0.5)Sr_(0.5)F_(2)(R=Y,Lu,Gd)crystals were grown by porous crucible temperature gradient technology.The crystal structure,absorption spectra,fluorescence spectra and fluorescence lifetime were systematically analyzed and discussed.Through the analysis of spectral parameters such as absorption cross section,emission cross section,fluorescence lifetime and fluorescence full width at half maximum(FWHM),it is concluded that 0.6%Pr,5%Y∶Ca_(0.5)Sr_(0.5)F_(2)mixed crystals have the best spectral parameter compared with other doped mixed crystals.The corresponding absorption cross sections at 443 nm and red emission cross sections at 640 nm are 1.63×10^(-20)and 3.39×10^(-20)cm^(2),respectively.The FWHM and fluorescence lifetime are fitted to be 4.50 nm and 42.8μs,respectively.The spectral parameters have been greatly improved compared with 0.6%Pr∶Ca_(x)Sr_(1-x)F_(2)(x=0,0.3,0.5,0.7,1.0)mixed crystals.All results show that 0.6%Pr,5%Y∶Ca_(0.5)Sr_(0.5)F_(2)crystals have great potential as gain media for novel Pr^(3+)doped broadband laser material.

关 键 词：激光晶体 碱土氟化物 Pr^(3+)掺杂 可见激光 发光性能 

分 类 号：O78[理学—晶体学] O734