用高温熔融法制备了Er3+/Tm3+共掺杂无铅铋硅酸盐玻璃.测试了玻璃的吸收光谱和荧光光谱, 分析和表征了Er3+、Tm3+离子之间的能量传递机制和传递效率, 结果表明：在800 nm和1 550 nm光源泵浦下, Er3+的掺入能够增强Tm3+离子1.8 μm发光, 相应的最大发射截面分别为6.7×10－21 cm2和7.3×10－21 cm2, 荧光带宽达到250 nm.根据Dexter-Foster模型, 得到Er3+：4I13/2能级到Tm3+：3F4能级的直接能量传递系数为16.8×10－40 cm6/s, 为1 550 nm泵浦下获得较强的1.8 μm发光奠定了基础.

Er3+/Tm3+ codoped lead-free bismuth silicate glasses were successfully prepared by conventional melt-quenching method. The energy transfer mechanism and energy transfer efficiency between Er3+ and Tm3+ ions were investigated through absorption spectra and fluorescence spectra. The results show that the Tm3+: 1.8 μm emission is enhanced by codoping Er3+ ions upon 800 nm and 1550 nm excitation. The corresponding maximum emission cross sections are estimated to be 6.7×10－21 cm2 and 7.3×10－21 cm2 on the basis of Fuchbauer-Ladenburger equation, respectively. Simultaneously, both values of 1.8 μm emission bandwidth are about 250 nm. The direct energy transfer microscopic parameter of Er3+: 4I13/2→Tm3+: 3F4 process is calculated to be 16.8×10－40cm6/s. This phenomenon results in the relatively stronger 1.8 μm emission using a 1550 nm pumping source.