可紫外激光刻写的掺铒铋硅酸盐玻璃光谱性质研究

报道了可紫外激光刻写的掺铒Na₂O-Bi₂O₃-SiO₂和Na₂O-B₂O₃-Bi₂O₃-SiO₂玻璃的光谱特性. 测量和计算了玻璃的光谱参数，分析、讨论了Bi₂O₃和B₂O₃含量变化对光谱参数的影响.实验表明基质玻璃中Bi₂O₃和B₂O₃含量改变可有效调节掺铒铋硅酸盐玻璃光谱参数.Bi₂O₃和B₂O₃含量增加，玻璃的光吸收和荧光性质改善，但Er³⁺离子的⁴I_13/2能级寿命降低.在B₂O₃含量为40%(Bi₂O₃/SiO₂＝0.67)时，Er³⁺离子峰值发射截面、⁴I_13/2能级的荧光寿命和荧光半高宽分别为8.49×10^－21cm²，0.52ms和78nm.结果表明掺铒铋硅酸盐玻璃是有前途的紫外光敏有源玻璃材料之一.

Optical characterization of ultraviolet laser photosensitive Er3+-doped bismuth-silicate glasses

This paper reports on the spectroscopic properties of ultraviolet laser photosensitive Er³⁺-doped bismuth-silicate glasses. Two series of the glasses Na₂O-Bi₂O₃-SiO₂-Er₂O₃ and Na₂O-B₂O₃-Bi₂O₃-SiO₂-Er₂O₃ have been prepared by conventional melting and quenching technique. The absorption spectra, emission spectra and lifetime of Er³⁺ ion have been measured. The optical parameters have been analysed by Judd-Ofelt theory. It is found that the full width at half maximums (FWHMs) increase with increase of the value of Bi₂O₃/SiO₂ and B₂O₃ content. Meanwhile, the lifetimes of ⁴I_13/2 level of Er³⁺-doped glasses decrease with increasing Bi₂O₃ and B₂O₃ content. When the content of B₂O₃ is 40%, the measured stimulatied emission cross section, lifetime and FWHM of ⁴I_13/2→⁴I_15/2 transition of Er³⁺-doped Na₂O-B₂O₃-Bi₂O₃-SiO₂ glass are 8.49×10^－21cm², 0.52ms and 78nm respectively.