项目名称: 掺铒氟碲酸盐透明微晶玻璃的3μm发光特性及其自淬灭效应研究
项目编号: No.51302086
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 一般工业技术
项目作者: 陈东丹
作者单位: 华南理工大学
项目金额: 25万元
中文摘要: 针对目前民用和军用市场对3 μm激光材料强烈需求的情况,以及国内外在稀土掺杂中红外激光材料发光特性和跃迁机理研究不足的背景下,本项目提出开展一种用于3 μm中红外玻璃光纤激光器的掺铒氟碲酸盐透明微晶玻璃及其发光特性的研究。基于基质组成、晶体场配位环境、稀土离子掺杂浓度、稀土共掺组合方式、除水技术、泵浦条件等因素与稀土离子能量传递机理的内在关联,着重解决制约3 μm激光玻璃发展的关键问题- - 消除荧光自淬灭效应。提出通过基质组成、除水工艺和晶化制度的优化,以及稀土离子共掺等方法,调控稀土离子的能量传递机制,抑制铒离子3 μm发光的荧光自淬灭现象,提高发光效率。通过本项目研究可掌握兼具热稳定性、化学稳定性好、发光效率高等优势的掺铒氟碲酸盐透明微晶玻璃组分和制备技术,为新一代高效率、经济型稀土掺杂中红外激光材料的设计和开发提供科学的基础数据和理论依据。
中文关键词: 氟碲酸盐微晶玻璃;稀土离子;自淬灭效应;3μm发光;
英文摘要: Owing to the increasing demand for 3 μm laser materials in the military and civil fields, this subject focuses on the basic investigations of a new type of erbium-doped ?uorotellurite glass ceramic as the gain host of mid-infrared laser. Emphasis will be placed on solving the self-quenching problem of the 3 μm fluorescence, according to glass compositions, the local environment of dopants, the content of rare earth ions, codoping sensitizer, dehydration technology and pumping condition, which influence the energy transition and transfer mechanism of rare earth ions. The aim of this subject is to obtain a new host material and its preparation technology for 3 μm mid-infrared fiber laser with lower nonradiative transition probability, higher luminescent efficiency, thermal stability and chemical stability. This work will offer basic data and theory for the development of economic and efficient mid-infrared laser materials.
英文关键词: fluorotellurite glass ceramic;rare earth ion;self-quenching;3 μm fluorescence;