在970 nm LD激发下，研究Tm³⁺,Yb³⁺共掺的AlF3基(AYF，AZF)玻璃能量传递和上转换发光性质。发现对于Tm³⁺的浓度猝灭，蓝光跃迁比近红外荧光跃迁表现更明显；对476 nm蓝光跃迁，AYF和AZF玻璃Tm³⁺最佳掺杂浓度都为0.1 mol-%；而对793 nm的近红外跃迁，Tm³⁺最佳掺杂浓度为0.3～0.5 mol-%。AYF玻璃的Yb³⁺离子最佳掺杂浓度为5 mol-%，AZF玻璃则为8～10 mol-%。Tm³⁺(3F4)→Yb(2F5/2)反向能量传递是引起Yb³⁺离子对上转换荧光的浓度猝灭的重要原因。

Energy transfers and upconversion fluorescence spectroscopy in Tm³⁺-Yb³⁺co-doped AlF3-based flouride glass, excited at 970 nm, is experimentally investigated. The experimental results show that the concentration quenching of blue fluorescence at 476 nm is stronger than that of infrared light at 793 nm. In AYF and AZF glass, the optimum content of Tm³⁺for 476 nm emission is about 0.1 mol-%, while for 793 nm emission is 0.3～5 mol-%. The concentration quenching of Yb³⁺to upconvertion fluorescence is also observed. It is maybe due to the back-energy transfer from the 3F4 level of Tm³⁺to the 2F5/2 level of Yb³⁺.