Yb^(3+)掺杂铋酸盐玻璃的发光特性  

Luminescence Properties of Yb^(3+) -Doped Bismuthate Glass

作　　者：汪韬 范慧艳[1] 赵国营[1] 程继萌[1] 陈伟[1] 胡丽丽[1] Guzik Malgorzata Boulon Georges 

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光单元技术研发中心,上海201800 [2]中国科学院大学,北京100049 [3]弗罗茨瓦夫大学化学学院 [4]里昂大学光物质研究所

出　　处：《中国激光》2017年第9期125-132,共8页Chinese Journal of Lasers

基　　金：国家自然科学基金(61475171)

摘　　要：研究了Yb^(3+)掺杂铋酸盐玻璃的发光特性参数,讨论了Yb^(2+)、Bi^(3+)等缺陷淬灭中心与Yb^(3+)之间的能量转移。对于已优化的基质组成,在荧光寿命没有大幅下降的前提下,玻璃中Yb^(3+)近红外波段的发射截面明显增大,吸收截面减小,激光增益能力和饱和抽运强度均得到提高。采用有效的除羟基工艺,玻璃中不会产生比磷酸盐玻璃中更为严重的Yb^(3+)发光淬灭效应,但铋酸盐玻璃中还可能存在Yb^(2+)、Bi^(3+)等价态不稳定的缺陷淬灭中心。The luminescence property parameters of the Yb3＋-doped bismuthate glass are investigated, and the energy transfer from those defect quenching centers such as Yb2＋ and Bi3＋ to Yb3＋ is also discussed. Based on the optimized matrix composition and without the sharp decline of the fluorescence lifetime, the near-infrared emission cross-section of Yb3＋ in glass is obviously increased, the absorption cross-section is reduced, and the capability of laser gain and the saturation pump intensity are both enhanced. By the efficient dehydroxyl process, the luminescence quenching effect of Yb3＋ in the bismuthate glass may not be stronger than that in the phosphate glass. However, there exist probably some defect quenching centers such as Bi3＋ and Yb2＋ with unstable valence states in the bismuthate glass.

关 键 词：材料 Yb3+掺杂铋酸盐玻璃 光谱特性 激光评估参数 荧光俘获效应 能量转移 

分 类 号：TN244[电子电信—物理电子学] TQ135.32[化学工程—无机化工]