Development of high thermal-resistant quartz laser materials by uniform dispersion with zeolite and its application to industry.

本研究的目的是在石英基质上制备高耐热激光材料。研究结果如下：(1)发现常规方法制备的石英材料中的荧光消光是由于掺入的钕等原子产生的。(2)建立了新的方法来实现掺杂原子在石英玻璃中的均匀分散，以避免在溶胶体中聚集。量子效率得到了很大的恢复，荧光寿命达到了500微秒。(3)建立了多种技术来控制石英玻璃中的荧光产生，溶胶-凝胶法中胶态二氧化硅的颗粒选择，溶胶凝胶过程中预制件的加工，发现了沸石晶体在二氧化硅共掺杂、使用磷光体改善发射过程以及双模和铜原子的新荧光等方面的另一种应用。(5)建立了新的量子效率测量方法来评估激光玻璃的基本性质。

The object of this research is to achieve high thermal-resistant laser materials with quartz host.The research results are as follows :(1) It was found that the fluorescence extinction in a quartz material produced by a conventional method was due to cluctering of doped atoms such as neodymium.(2) The new method was established to realize a uniform dispersion of doped atoms in quartz glass to avoid clustering in solgel quartz.The quantum efficiency was largely recovered and the fluorescence life time reached to 500 micro second.(3) Ther were founded many technologies to control vavle generation in quartz glass with particle selection of coloidal silica in solgel method, processing of preformed material in solgel process, an history in sintering temperature, and control of atomospheric gases.(4) Another application of zeolite crystal was found to co-doping method to silica, usage of phospher to improve an emission process, and new fluorescence from bismus and copper atoms.(5) Measurement method of quantum efficiency was newly established to estimate a basic property of the laser glass.