掺铒氟（卤）磷碲酸盐玻璃的上转换发光性能研究

研究了掺铒氟（卤）磷碲酸盐玻璃的吸收光谱和上转换荧光光谱，探讨了Er^2＋在氟（卤）磷碲酸盐玻璃中的上转换发光机理．在975nm激光二极管抽运下产生强烈的上转换红光及绿光。且红光的发光强度要远远大于绿光．以PbCl2取代PbF2后，红光的发光强度下降，而绿光却没有明显变化；以ZnCl2取代ZnF2达5mol％时，红光和绿光的发光强度均明显增大．

The absorption and upconversion spectra of Er3+-doped fluoride (halide) phosphate tellurite glasses were investigated for the first time, and the upconversion mechanisms were studied. Strong red and green upconversion luminescence were observed under 975nm laser diode excitation at room temperature. When PbF2 is partially replaced by PbCl2 gradually, the intensity of red emission decreases, while the green emission intensity changes only slightly. When ZnF2 is replaced by 5mol% ZnCl2, both red and green emissions intensity are enhanced obviously.