摘要
以K2W2O7为助熔剂,采用泡生法生长钬镱双掺钨酸镧钾[Ho3+:Yb3+:KLa(WO4)2,Ho:Yb:KLW]晶体。通过热重–差热分析,确定晶体的熔点为1118 ℃,在熔点以下晶体没有相变,热稳定性很好。X射线衍射分析表明:所生长的晶体为四方晶系 Ho:Yb:KLW 晶体,晶胞参数为a=b=0.538nm,c=1.193nm。测量晶体的红外及Raman光谱,并对峰值进行了归属。晶体样品的吸收光谱显示:Yb3+在978nm处吸收峰较强,半峰宽为19nm,适合采用InGaAs半导体激光二极管来作为激励源。表明Yb3+对Ho3+具有敏化作用。
Holmium, ytterbium co-doped potassium lanthanum tungstate crystal （Ho^3＋：Yb^3＋：KLa（WO4）2, Ho：Yb：KLW） was grown by the Kyropoulos method using K2W2O7 as the flux. The melting point determined by thermogravimetry-differential thermal analysis is 1 118 ℃. There is no phase transition below the melting point, and it has good thermal stability. The grown crystal was Ho：Yb：KLW crystal belonging to the tetragonal crystal system, and the lattice parameters obtained by X-ray diffraction analysis are a =b =0.538 nm and c=1.193 nm. The infrared spectra and Raman spectra of the crystal were measured and the peak values of the spectra were assigned. The absorption peak of Yb^3＋ at 978nm is stronger, and the half-width of the peak is 19nm. The crystal is suitable for use in InGaAs semiconductor laser diodes as the excitation source. The results indicate that Yb^3＋ has a sensitization effect on Ho^3＋.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2008年第8期1074-1078,共5页
Journal of The Chinese Ceramic Society
基金
吉林省科技厅科技发展计划(20050501)资助项目
关键词
钬镱双掺钨酸镧钾晶体
泡生法
红外光谱
RAMAN光谱
吸收光谱
holmium, ytterbium co-doped potassium lanthanum tungstate crystal
Kyropoulos method
infared spectrum
Raman spectrum
absorption spectrum
