Er~(3+)-Yb~(3+)共掺碲酸盐玻璃上转换绿光激发过程的研究
Excitation processes of up-conversion green emission for Er~(3+)-Yb~(3+) codoped tellurite glass
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摘要: 根据Er~(3+)-Yb~(3+)共掺碲酸盐玻璃绿光上转换发光的能级结构和相关跃迁建立的速率方程模型,分析了Er~(3+)的S_(3/2)~4能级上升特性与I_(11/2)~4能级和Yb~(3+)的F_(5/2)~2能级的关系.通过模型对实验观测的上升和衰减曲线的拟合,确定速率方程模型的相关参数,计算S_(3/2)~4能级粒子数布居趋于稳定时能量传递粒子数与激发态吸收粒子数之比.进一步分析了Er~(3+)-Yb~(3+)共掺绿光上转换发光的动力学过程.
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关键词:
- 速率方程模型 /
- 上转换 /
- Er~(3+)-Yb~(3+) /
- 方波激发
Abstract: This paper analyzed the build-up characteristics of Er~(3+4)S_(3/2) and the relationships between Er~(3+4) S_(3/2) I_(11/2)~4 and Yb~(3+) F_(5/2)~2 according to the energy structure for green up-conversion emission and relative transition rating function model for Er~(3+)-Yb~(3+) codoped tellurite glass. Through fitting the build-up and decay curves by the model the relative parameters for rating equation model were determined, and the relative value between energy transfer and excited state absorption when population of S_(3/2)~4 energy tend to be stable was calculated,also the dynamic processes in green up-conversion emission of Er~(3+)-Yb~(3+) codoped tellurite glass were analyzed. -
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