可见光掺稀土光纤激光器研究进展:从连续波至飞秒脉冲(特邀)  

Progress in Research on Visible Rare-Earth-Doped Fiber Lasers:from Continuous Wave to Femtosecond Pulses(Invited)

作　　者：罗正钱[1,2] 宋鲁明 阮秋君 Luo Zhengqian;Song Luming;Ruan Qiujun(Fujian Key Laboratory of Ultrafast Laser Technology and Applications,Xiamen University,Xiamen 361005,Fujian,China;Shenzhen Research Institute,Xiamen University,Shenzhen 518129,Guangdong,China)

机构地区：[1]福建省超快激光技术及应用重点实验室(厦门大学),福建厦门361005 [2]厦门大学深圳研究院,广东深圳518129

出　　处：《中国激光》2024年第1期25-43,共19页Chinese Journal of Lasers

基　　金：国家自然科学基金(62022069,62235014);深圳市科技项目(JCYJ20210324115813037)。

摘　　要：位于人眼可见波段(380~780 nm)的激光,在显示、生物医疗、精密加工、精密光谱、光通信等领域有着重要的应用价值。在众多可见光激光的产生方法中,可见光掺稀土光纤激光器因具有高效率、高光束质量、结构简单且免维护等优势,近年来受到国内外的广泛关注。对可见光掺稀土光纤激光器的研究进展进行了详细综述,介绍了可见光连续波光纤激光器、可见光调Q脉冲光纤激光器及可见光锁模脉冲光纤激光器的产生方式和特点。最新研究进展表明,其可覆盖蓝(~480 nm)、青(~491 nm)、绿(~520 nm)、黄(~573 nm)、橙(~605 nm)、红(~635 nm)及深红(~717 nm)等丰富的可见光波长,全光纤可见光输出功率已迈向10 W,而且可见光锁模超短脉冲宽度已窄至<200 fs。结合应用需求,简要展望了可见光波段光纤激光器的发展趋势。Significance Visible lasers,with wavelengths ranging from 380 nm to 780 nm,have important applications in the fields of display,biomedicine,precision processing,precision spectroscopy,optical communication,and military defense.Among all the different visible lasers currently available,the rare-earth-doped fiber ones attract considerable attention due to their advantages of high efficiency,excellent performance,compact structure,and maintenance-free nature.In this study,different types of lasers,including visible continuous-wave(CW)fiber lasers,visible Q-switched fiber lasers,and visible mode-locked fiber lasers,are discussed comprehensively,along with their output characteristics.The latest research progress indicates that these lasers can cover the entire visible wavelength range and present different colors,such as blue(~480 nm),cyan(~491 nm),green(~520 nm),yellow(~573 nm),orange(~605 nm),red(~635 nm),and deep-red(~717 nm).The output power approaches 10 W for the all-fiber visible lasers,and the pulse duration of the mode-locked pulse is less than 200 fs.Thus,the all-fiber visible lasers play an increasingly important role in underwater optical communication,material processing,laser welding,and spatiotemporal super-resolution imaging.This study summarizes the progress in the research on visible fiber lasers,which provides a strong basis for any future research and application on visible fiber lasers.Progress With continuous research on fluoride fibers doped with rare-earth metal ions like Pr3+,Ho3+,Er3+,Dy3+,Tm3+,and Nd3+,visible CW fiber lasers,visible Q-switched fiber lasers,and visible mode-locked fiber lasers have been actively developed.After nearly 30 years of development,the outputs of blue,green,yellow,red,and deep-red fiber lasers have been scaled up to Watt-level.Notably,the maximum output powers of red(~635 nm)and green(~521 nm)fiber lasers reach~5 W and~3.6 W,respectively,as shown in Fig.8 and Fig.11.Visible mode-locked fiber lasers have the advantages of higher peak power and shorter response time

关 键 词：激光器 可见光激光 掺稀土光纤激光器 连续波 调Q 锁模 

分 类 号：TN248[电子电信—物理电子学]