Ce3+对Er3+/Yb3+共掺氟磷酸盐玻璃光谱性质的影响

研究了能量接受离子Ce³⁺对Er³⁺上转换发光强度以及Er³⁺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Er³⁺/Ce³⁺间的能量转移机制进行了分析.分析认为，⁴I_11/2能级的Er³⁺通过无辐射能量转移把能量传递给²F_5/2能级的Ce³⁺关键词： 氟磷酸盐玻璃 光谱性质 光纤放大器 3+和Ce³⁺')" href="#">Er³⁺和Ce³⁺

Effects of Ce3+ ions on the spectroscopic properties of fluorophosphate glasses codoped with Er3+/Yb3+

This paper reports on the influence of energy acceptors Ce³⁺ ions on the upconversion and 1.5μm emission properties of fluorophosphate glasses codoped with Er³⁺/Yb³⁺. The energy transfer mechanism has been discussed based on the energy matching and the energy level. The Ce³⁺ ions are excited from the ²F_5/2 level to the ²F_7/2 level due to the non-radiatively energy transfer process of the Er³⁺ ions from the ⁴I_11/2 level to the ⁴I_13/2 level. The upconversion luminescence intensities of the Er³⁺ are decreased quite significantly owing to this energy transfer process. Meanwhile, the luminescence intensities, peak stimulated emission cross sections, and lifetimes of the ⁴I_13/2 level of Er³⁺/Yb³⁺-codoped fluorophosphate glasses increase largely with the introduction of the Ce³⁺ ions at the proper concentration of 1.11×10²⁰cm^-3.