2~5μm全固态中红外高功率光纤激光源研究进展(特邀)  

Research Progress in 2-5μm All-Solid-State Mid-Infrared High-Power Fiber Laser Sourcess(Invited)

作　　者：李剑峰 雷浩 王森宇 王壮 钟文博 谢昆林 赵鑫生 罗鸿禹 Li Jianfeng;Lei Hao;Wang Senyu;Wang Zhuang;Zhong Wenbo;Xie Kunlin;Zhao Xinsheng;Luo Hongyu(School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610097,Sichuan,China)

机构地区：[1]电子科技大学光电科学与工程学院,四川成都610097

出　　处：《中国激光》2024年第1期97-123,共27页Chinese Journal of Lasers

基　　金：国家自然科学基金(U20A20210,62005040);四川省科技支撑计划(2023NSFSC0033,2023NSFSC1964);中央高校基本科研业务费(ZYGX2021YGCX014)。

摘　　要：2~5μm中红外波段激光在科学研究、生物医疗、通信等众多领域中都有重要的应用价值,一直以来都是激光领域的研究热点。主要对目前国内外高功率2~5μm全固态中红外光纤激光源的发展现状进行了梳理,包括稀土离子掺杂的中红外光纤激光器、波长灵活可设计的拉曼光纤激光器和宽带超连续谱激光器,并对2~5μm全固态中红外光纤激光源的发展进行了展望。Significance The 2‒5μm mid-infrared wavelength range is a crucial region in an electromagnetic spectrum.Lasers that operate within this range play a critical role in various fields,such as defense,medical,environmental monitoring,and materials science.The generation of 2‒5μm lasers mainly includes solid-state lasers,quantum cascade lasers(QCL),inter-band cascade lasers,optical parametric oscillators(OPO),and fiber lasers.Fiber lasers have unique advantages,such as good beam quality,excellent thermal management capabilities,and robustness,which make them irreplaceable for various mid-infrared laser applications.Three methods are mainly used to generate 2‒5μm fiber lasers:1)rare-earth-doped fiber lasers,which are the simplest and fundamental;2)nonlinear fiber lasers based on nonlinear effects,which are effective for extending the laser wavelength,filling the spectral gaps not covered by rare-earth-doped fiber lasers owing to transition-level limitations;3)gas-filled fiber lasers,which utilize energy-level transitions in gas molecules(N_(2)O,HBr,and CO_(2))to achieve mid-infrared laser outputs.Progress This study comprehensively reviews the research and power-scaling progress in mid-infrared fiber lasers based on all-solid-state fibers.It covers three main types of mid-infrared fiber lasers:rare-earth-doped,Raman,and mid-infrared super-continuum fiber lasers.Table 1 in the main text presents representative achievements of rare-earth-doped fiber lasers in the 2‒5μm wavelength range.The continuous-wave laser output power within this range has been significantly improved,from milliwatt to watt/kilowatt levels.The highest output power values obtained using fiber lasers doped with Tm^(3+),Er^(3+),Ho^(3+),and Dy^(3+)ions are 1100,41.6,7.2,and 10.1 W,respectively.In particular,the longest wavelength tunability of the rare-earth-doped fiber lasers is 700 nm.Tables 2 and 3 present representative results for mid-infrared Raman fiber lasers and tunable mid-infrared Raman soliton lasers,respectively.Currently,by usi

关 键 词：激光器 中红外激光 稀土离子 拉曼激光器 超连续谱 氟化物光纤 

分 类 号：O436[机械工程—光学工程]