碱金属氟化物对掺Yb~(3+)氟磷酸盐玻璃析晶稳定性和光谱性质的影响

研究了碱金属氟化物对掺Yb3+氟磷玻璃的光谱性质和析晶稳定性能的影响。运用倒易法计算了Yb3+的发射截面。结果显示,LiF的引入对吸收和发射截面的提高作用较大并出现最佳引入量极值,其次为KF。碱金属氟化物的引入可提高二元体系的析晶稳定性能,使玻璃网络结构得到改善;拉曼光谱显示二元体系中引入YbF3后玻璃网络结构得到增强,而在引入碱金属氟化物的三元体系中掺杂YbF3后破坏了网络完整性,降低系统析晶稳定性能。

The influence of alkaline fluorides on spectroscopic properties and crystalization stability of Yb³⁺-doped fluorophosphate glasses was studied. Emission cross section of Yb³⁺ is calculated based on reciprocity method. Results show that LiF increases the absorption and emission cross section and has optimal introduction amount, and the second is KF. Alkaline fluorides improve the crystalization stability of binary system and strengthen the glass network. Raman spectra show that YbF<inf>3</inf> strengthens the glass network of binary system, but destroys that of the ternary system with alkaline fluorides and reduces the crystalization stability.