Growth and optical properties of ytterbium and rare earth ions codoped CaF2-SrF2 eutectic solid-solution(RE=Y^(3+),Gd^(3+),La^(3+))

作     者：Binbin Jiang Lihe Zheng Dapeng Jiang Handi Yin Jiangang Zheng Qiuhong Yang Guofeng Cheng Liangbi Su Binbin Jiang;Lihe Zheng;Dapeng Jiang;Handi Yin;Jiangang Zheng;Qiuhong Yang;Guofeng Cheng;Liangbi Su

作者机构：School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China School of Physics and AstronomyYunnan UniversityKunming 650091China Laser Fusion Research CenterChina Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Science and Technology on High Energy LaserChina Academy of Engineering and PhysicsMianyang 621900China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2021年第39卷第4期

页      面：390-397页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Project supported by the National Natural Science Foundation of China(U1830104,61635012,61925508) CAS Interdisciplinary Innovation Team,National Key Research and Development Program of China(2016YFB0402101) Strategic Priority Program of Chinese Academy of Science(XDB16030000) Development of Science and Technology foundation of China Academy of Engineering and Physics(2019HEL05-2) 

主　　题：Rare earth ions Optical materials Crystal growth Luminescence Raman spectroscopy 

摘      要：Ytterbium and rare earth ions(RE=Y,Gd,La)codoped CaF_(2)-SrF_(2)single crystals(3 at%Yb,6 at%RE:CaF_(2)-SrF_(2))were fabricated by temperature gradient technology(TGT).All the space groups remain the same Fm3m as that of Yb:CaF_(2)-SrF_(2).The lattice parameter a,unit cell volume V,as well as bond length of Ca/Sr-F and F-F increase in the sequence of rare-earth ions radius Y^(3+)Gd^(3+)La^(3+).The segregation coefficients of Yb ions are 0.87 in Yb,La:CaF_(2)-SrF_(2)and Yb,Gd:CaF_(2)-SrF_(2),which are larger than 0.85 in Yb,Y:CaF_(2)-SrF_(2)and 0.80 in Yb:CaF_(2)-SrF_(2).Absorption spectra in the range of 200 and 400 nm were analysed with Yb^(2+)*** absorption and emission cross-sections in the range of 900-1100 nm were determined together with fluorescence *** saturation pump density/Sat,minimum pump density/m in and gain cross-section were ***,La:CaF_(2)-SrF_(2)has a relatively higher optical parameter(δem×t,0.52×10^(20)cm^(2)·ms),lower Isat(3.68 kW/cm^(2))and^min(0.50 kW/cm^(2))at 1038 nm indicating the potential application in high power *** phonon energy of CaF_(2)-SrF_(2)is 302 cm^(-1)which is located between those of CaF_(2)and SrF_(2)as measured by Raman *** is believed that ytterbium and rare earth ions(RE=Y^(3+),Cd^(3+),La^(3+))codoped CaF_(2)-SrF_(2)eutectic solid-solution is promising for high-power and wavelength-tunable solid-state lasers.