WO3/Nb2O5掺杂对碲酸盐玻璃热学性质和拉曼光谱特性的影响

报道了钨碲酸盐玻璃系统TeO₂-ZnO-Na₂O-WO₃ 和钨铌碲酸盐玻璃系统TeO₂- ZnO-Na₂O-Nb₂O₅-WO₃抗析晶热稳定性和拉曼光谱特性. 实验研究了掺杂WO₃和Nb₂O₅对碲酸盐玻璃抗析晶热稳定性和拉曼光谱特性的影响, 并分析讨论了掺杂碲酸盐玻璃拉曼谱带展宽机制. 结果表明, 掺杂WO₃和Nb₂O₅较大地提高了碲酸盐玻璃的抗析晶热稳定性, 钨铌碲酸盐玻璃最大抗析晶热稳定性ΔT达154℃. 拉曼光谱研究表明，WO₃和Nb₂O₅的加入使碲酸盐玻璃在921和862cm^-1附近出现特征谱带, 导致拉曼光谱中高频移区从550cm^-1延伸扩展到950cm^-1, 从而有效地拓宽了碲酸盐玻璃的拉曼带宽, 钨铌碲酸盐玻璃最大拉曼光谱半高宽可达355cm^-1. 实验研究表明，钨铌碲酸盐玻璃是宽带拉曼光纤放大器的候选材料之一.

Effects of Nb2O5/WO3 Codoping on Thermal Stability and Raman Spectral Properties of Tellurite Glasses

Tungsten tellurite glasses TeO₂-ZnO-Na₂O-WO₃ and tungsten-niobium-tellurite glassesTeO₂- ZnO-Na₂O-Nb₂O₅-WO₃ were investigated for the application in broadband Raman fiber amplifier. Effects of the addition of Nb₂O₅ and WO₃ on the thermal stability against crystallization and Raman spectra of tellurite glasses were discussed. The results suggest that the addition of Nb₂O₅ and WO₃ can largely improve the thermal stabilities of tellurite glasses. Moreover, the tungsten-niobium-tellurite glasses exhibits strong Raman peaks at around 862 and 921 cm^-1. The mid-high frequency Raman region of the tellurite glass co-doped by Nb₂O₅ and WO₃ expands from 550cm^-1 to 950cm^-1 with the maximum full width at half maximum (FWHM) of about 355cm-1, which indicates that the tungsten-niobium-tellurite are promising materials for broadband Raman fiber amplification.