中文摘要：

研究了能量接受离子Ce^3＋对Er^3＋上转换发光强度以及Er^3＋在1.5μm附近波段发光性能参数的影响，并从能量匹配及能级结构角度出发对Er^3＋／Ce^3＋间的能量转移机制进行了分析．分析认为，^4I11/2能级的Er^3＋通过无辐射能量转移把能量传递给^2F5/2能级的Ce^3＋激发其跃迁至^2F7/2能级，而^4I11/2能级上的Er^3＋则无辐射弛豫至^4I13/2能级，从而有效降低氟磷酸盐玻璃中Er^3＋的上转换发光．当Er^3＋浓度为1．11×10^20cm^-3时，Ce^3＋的最佳掺杂浓度为2．22×10^20cm^-3＋，此时Ce^3＋的引入不仅可以降低上转换发光，而且有助于提高Er^3＋在1.5μm附近波段的荧光强度、发射截面以及^4I13/2能级荧光寿命．

英文摘要：

This paper reports on the influence of energy acceptors Ce^3＋ ions on the upconversion and 1.5μm emission properties of fluorophosphate glasses codoped with Er^3＋/Yb^3＋ . The energy transfer mechanism has been discussed based on the energy matching and the energy level. The Ce^3＋ ions are excited from the ^2F5/2 level to the ^2F7/2 level due to the non-radiatively energy transfer process of the Er^3＋ ions from the ^4I11/2 level to the ^I13/2 level. The upconversion luminescence intensities of the Er^3＋ are decreased quite significantly owing to this energy transfer process. Meanwhile, the luminescence intensities, peak stimulated emission cross sections, and lifetimes of the ^4I13/2 level of Er^3＋ /Yb^3＋ -codoped fluorophosphate glasses increase largely with the introduction of the Ce^3＋ ions at the proper concentration of 1.11 ×10^20 cm^-3 .