掺铒重金属氧氟硅铋酸盐玻璃的光谱性质

研究了重金属氧氟硅铋酸盐玻璃 (50-x)SiO2 xBi2O3 50PbF2(x=0, 3, 5, 8, 10, 13, 15 mol%)中Er3+离子的吸收光谱、荧光光谱、荧光半高宽、荧光 寿命和热稳定性能.应用Judd Ofelt理论计算了玻璃的强度参数Ωt(t=2,4,6)，应用 McCumber计算了能级4I13/2→4I15/2跃迁的受激发射截面. 结果发现荧光半高宽与Ω6有较大联系，Ω6越大，荧光半高宽越宽.对Er3+ 关键词： 重金属氧氟硅铋酸盐玻璃 光谱性质 Er3+离子 Judd Ofelt参数

Spectroscopic properties of Er3+-doped heavy metal oxyfluoride bismuth silicate glasses

The absorption spectra, fluorescence spectra, fluorescence lifetime and thermal stability of Er3+ doped (50 x)SiO2 xBi2O3 50PbF2 (x =0, 3, 5, 8, 10, 13, 15 mol%) glasses were investigated. The intensity paramet ers Ωt (t=2,4,6) were calculated by Judd Ofelt theory, and the stimulate d emission section sections of 4I13/2→4I15/2 transitio ns were calculated by McCumber. The results showed that the FWHM value is relate d to the Ω6 parameter, and the larger the Ω6 parameter, the broade r the FWHM. Compared with other glass hosts, the gain bandwidth property of Er 3+ doped SBP3 glass is close to those of tellurite and bismuth glasses, and much greater than those of silicate, a phosphate and germanate glass, which sho ws that Er3+ doped heavy metal oxyfluoride bismuth silicate glasses can b e used as host materials for broadband optical amplifier.