掺铒重金属氧氟硅铋酸盐玻璃的光谱性质

Spectroscopic properties of Er ^(3+)-doped heavy metal oxyfluoride bismuth silicate glasses

研究了重金属氧氟硅铋酸盐玻璃 (5 0 -x)SiO2 xBi2 O3 5 0PbF2 (x =0 ,3,5 ,8,10 ,13,15mol% )中Er3+ 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Ωt(t=2 ,4 ,6 ) ,应用McCumber计算了能级4 I1 3 2 →4 I1 5 2 跃迁的受激发射截面 .结果发现荧光半高宽与Ω6 有较大联系 ,Ω6 越大 ,荧光半高宽越宽 .对Er3+ 离子在不同玻璃基质中增益带宽特性的比较发现 ,Er3+ 掺杂 4 5SiO2 - 5Bi2 O3- 5 0PbF2 玻璃的增益带宽特性与碲酸盐和铋酸盐玻璃相当 ,大于磷酸盐、锗酸盐和硅酸盐玻璃 ,表明掺Er3+ 重金属氧氟硅铋酸盐玻璃可作为宽带光纤放大器的基质材料 .

The absorption spectra, fluorescence spectra, fluorescence lifetime and thermal stability of Er 3+-doped (50-x)SiO 2-xBi 2O 3-50PbF 2 (x0, 3, 5, 8, 10, 13, 15 mol%) glasses were investigated. The intensity parameters Ω t (t2,4,6) were calculated by Judd-Ofelt theory, and the stimulated emission section-sections of 4I 13/2→ 4I 15/2 transitions were calculated by McCumber. The results showed that the FWHM value is related to the Ω 6 parameter, and the larger the Ω 6 parameter, the broader 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 shows that Er 3+-doped heavy metal oxyfluoride bismuth silicate glasses can be used as host materials for broadband optical amplifier.