摘要
采用提拉法生长出掺镱钨酸镧钾[Yb:KLa(WO_4)_2,Yb:KLW]晶体,测试了晶体的红外光谱和Raman光谱,对出现的振动模式进行了归属。从X射线衍射分析得到晶胞参数a=b=0.532nm,c=1.189nm。通过热重-差热分析得到晶体的熔点为1119℃,在熔点以下没有相变。测试了晶体的吸收光谱和荧光光谱,计算了相应的光谱参数。结果表明:该晶体发射波长为1021 nm,在931,981 nm附近有较强、较宽的吸收峰,适合用InGaAs半导体激光泵浦。
Ytterbium doped potassium lanthanum tungstate crystal [Yb：KLa（WO4）2, abbreviated Yb：KLW] was grown by the Czochralski method. The infrared spectra and Raman spectra of the crystal were measured and the vibrational mode was assigned. The lattice parameters of the crystal obtained by X-ray diffraction are a=b：0.532 nm and c=1. 189 nm and the melting point determined by thermogravimetryifferential thermal analysis is 1 119 ℃. There is no phase transition below the melting point. The absorption spectrum and fluorescence spectrum of the crystal were measured, and the corresponding spectral parameters were calculated. The results show that there are stronger and broader absorption peaks at 931 and 981 nm, and an emission wavelength of 1 021 nm for the crystal. It is suitable for use in InGaAs laser diode pumps as the excitation source.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2007年第11期1531-1534,共4页
Journal of The Chinese Ceramic Society
基金
吉林省科技厅工程发展计划(吉科20050501)资助项目。
关键词
掺镱钨酸镧钾晶体
提拉法
吸收光谱
荧光光谱
Ytterbium doped potassium lanthanum tungstate crystal
Czochralski method
absorption spectrum
fluorescence spectrum
