中文摘要：

研究了不同Er^3＋／Yb^3＋掺杂比46Bi2O3—44GeO2—10Na2O（B46G44N10）（摩尔分数）玻璃的吸收光谱、红外吸收谱和上转换光谱性质，分析了玻璃中Yb^3＋敏化Er^3＋的上转换发光机制。测试了Er^3＋离子在不同Yb^3＋浓度下玻璃中的上转换荧光强度，得到最佳的掺杂质量比Er^3＋：Yb^3＋=1：6。计算了在980nm激发下Er2O3质量分数为0．5％和Yb2O3质量分数为3．0％的Er^3＋／Yb^3＋共掺B46G44N10玻璃的绿光上转换效率为2．27×10^-4。比较了不同基质材料玻璃的上转换效率，结果表明B45G44N10玻璃是一种良好的上转换基质材料。

英文摘要：

The absorption spectra, infrared （IR） absorption spectra and upconversion fluorescence spectra of a series of Er^3＋/Yb^3＋-codoped 46Bi2O3-44GeO2-10Na2O （B46G44N10） glasses were investigated, and upconversion luminescence mechanisms of Yb^3＋ sensitize Er^3＋ were analyzed. Upconversion fluorescence intensities of Yb^3＋ sensitize Er^3＋ were measured, the optimal doping ratio of Er^3＋ and Yb^3＋ was 1：6 for this glass, which resulted in the strongest upconversion fluorescence intensities. An upconversion efficiency of 2.27× 10^-4 was calculated for green emission from the B46G44N10 glass with 0.5 wt.-% Er2O3 , and 3.0 wt.-% Yb2O3 pumped by 980 nm. Results indicated that this kind of bismuth glasses might be potential materials for developing upconversion optical devices.