Tm^(3+)/Ho^(3+)共掺碲酸盐玻璃2.0μm发光性质研究  

2.0 μm Fluorescence Spectra of Tellurite Glasses Co-Doped with Tm-Ho

作　　者：印冰[1] 杨中民[1] 杨钢锋[1] 姜中宏[1] 

机构地区：[1]华南理工大学特种功能材料及其制备新技术教育部重点实验室,广东广州510640

出　　处：《稀有金属材料与工程》2008年第6期1016-1018,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50402007);教育部新世纪优秀人才项目(CNCET-04-0823)资助

摘　　要：研究了Tm3+/Ho3+离子共掺碲酸盐玻璃的光谱性质,应用Judd-Ofelt理论计算了玻璃的各项光谱参数,推导了速率方程。表明3H4→3F4自发辐射跃迁几率很小,这一跃迁发射为一自终止系统。Tm3+离子3F4上粒子数主要来源于3H4+3H6→23F4的交叉弛豫过程。玻璃的荧光光谱表明,随着Ho2O3浓度的增加,Tm3+离子3F4→3H6跃迁的1.8μm发光强度降低,而Ho3+离子5I7→5I8跃迁的2.0μm发光强度迅速升高,说明Ho2O3浓度的增加,Tm3+离子和Ho3+离子间的能量转移作用逐渐加强。The spectroscopic characteristics of Tm^3＋/Ho^3＋ co-doped tellurite glasses have been investigated. The spectroscopy parameters are calculated by using the Judd-Ofelt theory. The rate equations and the intensity relation of 1.8 μm emission with the pump power prove that the particle number in ^3F4 comes from the cross-relaxation process of ^3H4＋^3H6→2^3F4. The emission spectra of Tm^3＋-Ho^3＋ co-doped glasses show that with increasing the Ho2O3 concentration, the intensity of 1.8 μm emission decreases, while 2.0 μm emission intensities increases. The ion energy transfer from Tm^3＋ to Ho^3＋ becomes stronger with the increase of Ho2O3 concentration.

关 键 词：碲酸盐玻璃 Tm^3+/Ho^3+离子 交叉弛豫 能量转移 

分 类 号：TQ17112[化学工程—玻璃工业]