Measurement of refractive indices and thermal refractive index coefficients of Cr^3+ Be3Al2Si6O18 by auto-collimation method  

作　　者：CHEN Zhenqiang1,2 ,ZHANG Ge1,SHEN Hongyuan1,HUANG Chenghui1 & LIU Wen1 1.Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China 2.College of Science and Engineering,Jinan University,Guangzhou 510632,China 

出　　处：《Science China(Technological Sciences)》2004年第2期186-190,共5页中国科学（技术科学英文版）

基　　金：the National Natural Science Foundation of China (Grant No. 60278025).

摘　　要：The principal refractive indices and the thermal refractive index coefficients for Be3Al2Si6O18 crystal doped with 1.01wt% Cr2O3 have been accurately measured by the auto-collimation method at wavelengths of 0.488, 0.53975, 1.064, 1.0795 and 1.3414 μm, and temperatures of 308.2, 328.6, 359.1 and 395.4 K respectively. Based on the measured results of principal indices of 0.488, 0.6328, 1.0795 and 1.3414μm, the Sellmeier’s equations and the thermal refractive index coefficients have been obtained, and the result has been proven to be accurate by error analysis.

关 键 词：Cr3+: Be3Al2Si6O18 crystal  refractive index  thermal coefficient. 

分 类 号：O4-34[理学—物理]