窄线宽光纤激光振荡器研究进展（特邀）

Research progress of narrow linewidth fiber laser oscillator (Invited)

摘要: 窄线宽光纤激光器在遥感探测、非线性频率转换和光束合成等领域具有重要的应用价值。介绍了窄线宽光纤激光振荡器的典型谐振腔结构及其工作原理，从实现更窄线宽的角度梳理了单频选模技术，从获得更高功率的角度梳理了功率提升技术，综述了窄线宽光纤激光振荡器的研究现状，并对窄线宽光纤激光技术的发展进行了展望。

Abstract: Narrow linewidth fiber lasers can be used in applications such as remote sensing, nonlinear frequency conversion and beam combination. In this paper, the typical structures and corresponding working principles of narrow linewidth fiber laser oscillator were introduced. The single-frequency mode selecting technologies were summarized from the perspective of obtaining narrower linewidth, and the power scaling technologies were summarized from the perspective of generating higher power. The current status of narrow linewidth fiber laser oscillator was reviewed, and the development of narrow linewidth fiber laser technologies was prospected.