摘要
稀土掺杂有源光纤激光器或放大器具有重量轻、体积小、电光转换效率高等优点,在空间激光通讯、空间激光雷达、太空垃圾处理及军事等方面有重要应用价值。然而,常规稀土掺杂有源光纤在太空辐射环境中的辐射诱导损耗是非稀土掺杂无源光纤的1000倍以上,这给面向空间应用的光纤激光器或放大器的长期稳定性带来了严峻挑战。本文简要介绍了太空辐照环境、石英光纤在太空中的应用需求和所面临的挑战;然后从三个方面详细介绍了当前国内外在耐辐照有源光纤领域取得的最新研究成果:1)有源光纤辐致暗化机理,2)有源光纤耐辐射特性的影响因素,3)提高有源光纤耐辐射特性的方法;最后,对耐辐照有源光纤的未来研究方向进行了展望。
Owing to their reduced weight,size,and high electronic-optic conversion efficiency,rare earth(RE)doped active fiber lasers or amplifiers are crucial in space-based applications,such as space laser communication,space laser radar,and space waste disposal and military.However,the radiation-induced attenuation of the active(RE-doped)fibers is approximately 1000times larger than that of passive(RE-free)fibers under the same radiation condition,which poses a severe challenge to the long-term stability of active fiber lasers or amplifiers in space.First,this study briefly introduces the space radiation environment,the application requirements and challenges of silica-based optical fibers in space.Second,the latest research progress in the field of radiation-resistant active fibers,both in China and elsewhere,are systematically introduced from three aspects:1)the mechanism of radiation-induced darkening of active fibers;2)the primary factors influencing the radiation resistance of active fibers;3)the methods to improve the radiation resistance of active fibers.Finally,the potential issues that require further investigation are suggested.
作者
邵冲云
于春雷
胡丽丽
Shao Chongyun;Yu Chunlei;Hu Lili(Key Laboratory of Materials for High Power Laser,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou,Zhejiang 310024,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2020年第5期224-252,共29页
Chinese Journal of Lasers
基金
国家自然科学基金(61875216)。
关键词
激光光学
有源光纤
耐辐照
色心
辐射诱导损耗
空间应用
laser optics
active fiber
radiation resistance
color center
radiation induced attenuation
space application
