制备了一种新的Yb3+/Er3+/Tm3+共掺氧氟碲酸盐玻璃.研究了ZnF2调整Yb3+/Er3+/Tm3+共掺氧氟碲酸盐玻璃的Raman光谱、吸收光谱和上转换荧光光谱.结果发现,该体系玻璃具有较低的声子能量,在980 nm LD激发下,可以同时观察到明显的蓝色(476nm)、绿色(530和545 nm)和红色(656nm)上转换发光.上转换蓝光(476 nm)是由于Tm3+离子1G4→3H6跃迁,上转换的绿光(530和545 nm)是由于Er3+离子2H11/2→4I15/2和4S3/2→4I15/2跃迁,上转换红光(656nm)是由于Er3+离子4F9/2→4I15/2跃迁.根据吸收光谱以及Yb3+、Er3+和Tm3+离子的能级,分析了Yb3+/Er3+/Tm3+共掺氧氟碲酸盐玻璃的上转换发光机理,发现上转换蓝光是一个三光子吸收过程,而上转换绿光和红光均为双光子吸收过程.研究结果表明,Yb3+/Er3+/Tm3+共掺氧氟碲酸盐玻璃是一种三维立体显示用激光玻璃的潜在基质材料.
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