单频光纤激光技术的研究进展(特邀)

Research progress of single-frequency fiber laser technology(Invited)

单频光纤激光具有单色性好、谱功率密度高等特点,在通信传感、雷达、引力波探测、非线性频率变换等领域有广泛的应用需求。目前单频光纤激光技术正朝着更高功率、更宽波段和更高性能等方向发展,是激光技术领域的研究前沿和热点。文中系统梳理了近年来单频光纤激光领域取得的重要进展,具体从单频激光实现方式、功率增长、波长拓展以及性能提升等方面对相关标志性工作进行了总结,讨论了单频光纤激光技术当前所面临的挑战,并展望了其未来发展趋势。

Single-frequency fiber laser has the merits of excellent monochromaticity and high spectral power density, and it has widespread application needs in, for example, coherent communication and sensing, lidar,gravitational wave detection and nonlinear frequency conversion. At present, single-frequency fiber laser technologies are moving towards the direction of higher output power, broader spectral range, and higher overall performance, and have become the research frontier and hotspot in the field of laser technology. This manuscript systematically combed through the important progress of single-frequency fiber lasers in recent years.Specifically, the landmark works with respect to the implementation mode of single-frequency lasing, power scaling, wavelength expanding and performance improvement were reviewed. In addition, the current challenges as well as future trends of single-frequency fiber laser technology were also discussed.