NaY(WO_4)_2:Tm,Yb晶体的上转换发光  

Up-conversion of NaY(WO_4)_2:Tm,Yb Crystal

作　　者：程振祥[1] 张树君[1] 宋峰[2] 郭红沧[2] 仪修杰[1] 韩建儒[1] 陈焕矗[1] 

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

出　　处：《压电与声光》2001年第5期387-390,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目 ( No.6 97770 17)

摘　　要：用高频加热 Czochralski法生长了 Yb3+ ,Tm3+ 共掺的 Na Y(WO4) 2 晶体。测量了晶体在室温下的 2 90～ 2 0 0 0 nm内的吸收谱 ,并对跃迁的能级进行了指认。在 972 nm二极管激光器泵浦下观察到 Tm3+ 的 793nm和45 7nm上转换发光 ,研究了 NYW晶体中 Yb3+ 向 Tm3+Thulium and ytterbium co doped double tungstates NaY(WO 4) 2 crystals were prepared by using RF heating Czochralski(CZ)pulling method.Its absorption spectra have been recorded in the region of 290～2 000 nm at room temperature.The transitions of the energy levels were assigned.The up conversion fluorescences at 793 nm and 475 nm were measured when the sample were pumped by 972 nm LD and the energy transfer mechanism between Yb 3+ and Tm 3+ ions was analyzed.

关 键 词：上转换发光 激光晶体 高频加热 晶体生长 

分 类 号：O782[理学—晶体学]