Ho^(3+),Yb^(3+):YAl_3(BO_3)_4晶体的光谱特征  

Optical Properties of Ho^(3+),Yb^(3+):YAl_3(BO_3)_4 Crystal

作　　者：李静[1] 王继扬[1] 苏静[2] 张怀金[1] 谭浩[2] 宋峰[2] 

机构地区：[1]山东大学晶体材料国家重点实验室,山东济南250100 [2]南开大学物理学院光子学中心,天津300071

出　　处：《光电子．激光》2005年第9期1067-1070,共4页Journal of Optoelectronics·Laser

基　　金：国家"863"计划资助项目(2002AA311030)

摘　　要：采用助熔剂法生长了Ho3+,Yb3+共掺的Ho3+,Yb3+:YAl3(BO3)4(Ho,Yb:YAB)晶体,测量了晶体的室温吸收谱,进而根据Judd-Ofelt(J-O)理论计算了Ho3+在Ho,Yb:YAB晶体中的强度参数、自发辐射几率和积分发射截面等参数,得到强度参数为Ω2=1.50639×10-18cm2、Ω4=4.86489×10-19cm2和Ω6=1.40248×10-19cm2。研究了晶体的荧光特性,并在976 nm激光泵浦下得到了上转换绿色荧光。Single crystal of Ho^3＋, ytterbium-codoped yttrium aluminum tetraborate Ho^3＋, Yb^3＋： YAl3 （BO3）4 （Ho, Yb：YAB） has been grown by the flux method. The absorption spectra in the visible and NIR regions of Ho,Yb：YAB crystal were measured at room temperature;we calculated the intensity parameters, the spontaneous emission probabilities and stimulated emission cross sections of Ho^3＋ in Ho,Yb：YAB crystal by Judd-Ofelt（J-O） theory. The fluorescence spectra of Ho,Yb：YAB crystal were also measured at room temperature excited by 976 nm laser. The strong NIR emission peaks located at 1 921 nm was observed,and the visible up-conversion luminescence has been found.

关 键 词：Ho^3+ Yb^3+ Ho^3+ Yb^3+:YAl3(BO3)4(Ho Yb:YAB)晶体 光谱性质 上转换 

分 类 号：O734[理学—晶体学]