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.
出处
《中国稀土学报》
CAS
CSCD
北大核心
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)
关键词
氧氯碲酸盐玻璃
光谱性质
上转换发光
稀土
oxychloride tellurite glasses
spectral properties
upconversion luminescence
rare earths
