导　　师： 曾繁明

学科专业： 080502

授予学位： 硕士

作　　者： ;

机构地区： 长春理工大学

摘　　要： 针对目前国内在中红外激光晶体方面研究的缺乏以及军事、医疗和民用领域的实际需要,本文运用共沉淀法制备出了Ho:BaY2F8多晶料,讨论了实验过程中的影响因素,包括酸的浓度、搅拌时间与温度、沉淀剂以及煅烧温度。对产物样品进行了X射线衍射分析、扫描电子显微分析以及荧光光谱分析,得到了最佳的工艺参数以及上转换效率最高的掺杂浓度。使用提拉法生长出了Ho:BaY2F8晶体,讨论了籽晶的选择和温度梯度这两个影响产物质量的因素,对产物样品进行了X射线衍射分析、吸收光谱分析以及荧光光谱分析,对生长条件的选择进行了研究。 Taking domestic lack by far of research in mid-infrared laser crystal and lots of actual demand in the military, medical and civil fields into account. Ho:BaY2F8polycrystalline materials have been obtained by co-precipitation method. Many influencing factors in experiment have been discussed, including concentration of the acid, stirring temperature and time, precipitating agent and calcination time. Samples of the product have been analysised by X-ray diffraction, scanning electron microscopy and fluorescence spectroscopy, then the optimal process parameters and doping concentration for highest upconversion efficiency have been obtained. Ho:BaY2F8crystal have been obtained by Czochralski method. Many factors for product quality have been discussed, including the choice of the seed crystal and temperature gradient. Samples of the product have been analysised by X-ray diffraction, absorption spectrum and fluorescence spectroscopy. The selection of growth conditions have been considered.

关 键 词： 中红外激光晶体 共沉淀法 提拉法 光谱性能

领　　域： [理学]