高掺稀土石英光纤及短腔激光研究进展(特邀)  

Research Progress of Highly RE-Doped Silica Fibers and Short-Cavity Fiber Lasers(Invited)

作　　者：王亚飞 郭梦婷 王璠[1] 邵冲云 焦艳 王孟[1] 张磊[1] 董贺贺 冯素雅[1] 王世凯[1] 陈丹平[1] 于春雷[1,2] 胡丽丽 Wang Yafei;Guo Mengting;Wang Fan;Shao Chongyun;Jiao Yan;Wang Meng;Zhang Lei;Dong Hehe;Feng Suya;Wang Shikai;Chen Danping;Yu Chunlei;Hu Lili(Research Center of Specialty Glass and Fiber,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;School of Physics and Optoelectronic Engineering,Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,Zhejiang,China;Juxin Photonics Technology(Taizhou)Co.,Ltd.,Taizhou 318000,Zhejiang,China)

机构地区：[1]中国科学院上海光学精密机械研究所特种玻璃与光纤研究中心,上海201800 [2]国科大杭州高等研究院物理与光电工程学院,浙江杭州310024 [3]聚芯光子科技(台州)有限责任公司,浙江台州318000

出　　处：《中国激光》2024年第19期135-159,F0002,共26页Chinese Journal of Lasers

基　　金：中国科学院基础与交叉前沿科研专项B类(XDB0650000);国家自然科学基金(62205356)。

摘　　要：基于高增益稀土掺杂光纤的短腔型单频光纤激光器和高重复频率被动锁模光纤激光器在工业、医疗及军事等领域具有重要应用。石英基光纤具有低损耗、易熔接等应用优势,但稀土离子掺杂浓度低会导致光纤的单位增益低,短腔激光性能受限。近年来,随着稀土掺杂石英玻璃基础研究的不断深入以及光纤制备方法与工艺的大幅提升,面向短腔激光应用的稀土掺杂石英光纤相继被开发、应用,各波段激光性能均得到显著提升,应用潜力不断释放。为此,本文以稀土掺杂石英光纤制备技术以及不同稀土离子掺杂石英光纤及其在短腔激光器中的应用为主线,系统梳理分析了高掺稀土石英光纤的最新研发情况及应用进展,并对其下一阶段的发展方向进行了展望。Significance Short-cavity single-frequency fiber lasers and high-repetition-rate passively mode-locked fiber lasers based on highgain rare-earth(RE)-doped fibers have significant applications in the manufacturing,healthcare,and military fields.Although REdoped silica fibers have advantages such as low propagation loss and easy splicing,the low fiber unit gain coefficient caused by the low doping concentration of RE ions severely limits the performance of short-cavity lasers.In recent years,with the expansion of fundamental research on RE-doped silica glasses and significant improvements in fiber fabrication techniques,RE-doped silica fibers have been developed and successfully applied for short-cavity lasers.The performance of short-cavity lasers at various wavelengths has been significantly improved,unleashing their potential for application.Considering fiber fabrication techniques and short-cavity laser applications using different RE-doped silica fibers,this review systematically analyzes the latest developments and application progress of highly RE-doped silica fibers and predicts their future development.Progress Owing to the continuous improvement of fiber fabrication techniques and the further development of basic research on RE-doped silica glasses,the doping concentration of RE ions and the pump absorption coefficient of silica fibers have been significantly improved in recent years.Table 4 lists the high absorption coefficient Nd^(3+),Yb^(3+),Er^(3+),and Tm^(3+)-doped silica fiber products developed by special fiber manufacturers such as Nufern,Coractive,and Liekki.The most typical is the Coractive Yb406 Yb^(3+)-doped silica fiber,which has a core absorption coefficient of 2400 dB/m at 976 nm.According to estimation,the Yb doping content(mass fraction)in the core can reach 5%(or even higher),which is significantly higher than the Yb doping content(mass fraction)of conventional Yb^(3+)-doped silica optical fibers(~1%).Taking these high-absorption RE-doped silica fibers as gain media,many research groups

关 键 词：稀土掺杂 石英光纤 光纤激光 短腔激光 

分 类 号：O436[机械工程—光学工程]