Tm^(3+)离子浓度对碲酸盐玻璃热稳定性及光谱性能的影响  

Effects of Tm^(3+) Ion Concentration on the Thermal Stability and Spectroscopic Properties of Tellurite Glasses

作　　者：吴腾宴[1] 成茵[1] 吴钟晴[1] 杨海军[1] 周伟伟[1] 

机构地区：[1]长沙理工大学物理与电子科学学院,长沙410004

出　　处：《硅酸盐通报》2013年第4期583-588,共6页Bulletin of the Chinese Ceramic Society

基　　金：湖南省科技厅项目(2012WK3009);湖南省重点学科建设项目;湖南省高校科技创新团队支持计划资助

摘　　要：用高温熔融冷淬法制备Tm3+离子掺杂75TeO2-20ZnO-5La2O3碲酸盐玻璃,运用差示扫描量热仪(DSC)分析了玻璃样品的热稳定性,结果表明样品均具有良好的热稳定性。根据紫外-可见-近红外分光光度计测量得到的玻璃吸收光谱,运用Judd-Ofelt理论,计算了Tm3+离子在碲酸盐玻璃中的Judd-Ofelt强度参数、自发辐射概率A、荧光分支比β和辐射寿命τR等光谱参数。当掺杂浓度为0.8mol%时,玻璃热稳定性好,3H4的荧光寿命最长,为0.285ms,有望成为一种理想的S波段宽带光纤放大器用基质材料。Tm^3＋ ion doped 75TeO2-20ZnO-SLa2O3 tellurite glasses were prepared by high temperature melt quenching method. Differential scanning calorimetry （DSC） was used to analyze the thermal stability of the glass samples, and all samples have good thermal stability according to the results. UV- Visible-Near infrared spectrophotometer was used to measure the absorption spectrum. Judd-Ofeh strength paranmeters, spontaneous emission probability A, fluorescence branching ratio β and radiative lifetimes τR spectral parameters were calculated by using Judd-Ofelt theory. We concluded that when the Tm^3＋- doped concentration reaches to 0.8mo1%, the tellurite glass has good thermal stability and the longest lifetime of 3H4 which is 0. 285 ms, and it is possible to be a promising matrix material for S-band broadband optical fiber amplifier.

关 键 词：碲酸盐玻璃 氧化铥 掺杂浓度 辐射寿命 

分 类 号：TQ174[化学工程—陶瓷工业]