论文部分内容阅读
前言自从1975年普兰等人发现了氟化铝系玻璃以来,重金属氟化物玻璃的研究和应用开发取得了很大的进展。在这类材料中,无论是对玻璃的形成还是对玻璃的稳定化,稀土离子作为结构单元都起着很重要的作用。这类玻璃的重要特性之一是它们独特的透过波长范围,即从紫外0.25μm到红外7μm。在这一光学范围内都能观察到这些玻璃的吸收和发射谱带。由于这种基体的独特性质,稀土金属在这样的玻璃中占据了特殊的位置,从而产生了与基于四面网络的传统玻璃不同的光学性质。
Introduction Since the discovery of aluminum fluoride glass by Planner and others in 1975, great progress has been made in the research and application of heavy metal fluoride glass. In such materials, rare earth ions play a very important role as building blocks both for glass formation and for glass stabilization. One of the important features of this type of glass is their unique transmission wavelength range, from 0.25 μm UV to 7 μm IR. The absorption and emission bands of these glasses can be observed in this optical range. Due to the unique nature of this matrix, rare earth metals occupy a special place in such glasses, resulting in different optical properties than conventional glasses based on a four-sided network.