Tm^(3+)/Yb^(3+)共掺氧氯碲酸盐玻璃上转换发光研究  

Investigation on Upconversion Luminescence of Tm^(3+)/Yb^(3+)-Codoped Oxychloride Tellurite Glasses

作　　者：徐时清[1] 赵士龙[1] 张丽艳[1] 王宝玲[1] 陈亮[1] 

机构地区：[1]中国计量学院信息工程学院光电材料与器件研究所,浙江杭州310018

出　　处：《中国稀土学报》2005年第5期547-550,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(60508014和50502030)

摘　　要：制备了Tm3+/Yb3+共掺氧氯碲酸盐玻璃,研究了玻璃的热稳定性能、Raman光谱和上转换发光光谱,分析了上转换发光机制。结果表明:通过980 nm的激光二极管激发,在室温下同时观察到强烈的蓝光(476 nm)和微弱的红光(649 nm),分别是Tm3+离子的1G4→3H6和1G4→3H4跃迁。随氯化铅含量增加,基质玻璃的热稳定性能增强,基质玻璃的声子能量降低,上转换蓝光和红光的强度增加。表明Tm3+/Yb3+共掺氧氯碲酸盐玻璃是一种上转换蓝光激光器的潜在基质材料。Tm^3＋/Yb^3＋-codoped oxychloride tellurite glasses were prepared. Thermal stability, Raman spectra and upconversion luminescence spectra were studied, and upconversion luminescence mechanisms were analyzed. The results show that the intense blue and relatively weak red emissions centered at 476 and 649 nm corresponding to the transitions ^1Gn→^3H6 and ^1G4→^3H4 of Tm^3＋, respectively, were simultaneously observed at room temperature under 980 nm LD excitation. With increasing PbC12 content, thermal stability of host glasses increases, phonon energy of host glasses decreases, and upconversion luminescence intensities increase, which indicate that Tm^3＋/Yb^3＋-codoped oxychloride tellurite glasses can be used as potential host materials for upconversion blue lasers.

关 键 词：氧氯碲酸盐玻璃 光谱性质 上转换发光 稀土 

分 类 号：O61[理学—无机化学]