全固态单频激光器在高分辨率激光光谱学、相干通信、激光雷达、引力波探测等方面的重要应用, 成为全固态激光器研究的一个重要方向。概述了几种获得全固态单频激光器的方法, 主要有短腔法、耦合腔法、双折射滤光片法、光栅选频法、插入标准具法、单向环形腔法、扭转模腔法等。介绍了不同方法实现单频的基本原理及国内外进展, 总结比较了它们各自的优缺点和适用范围, 为不同的单频激光应用需求提供了不同的单频技术手段。

Single-frequency all-solid-state lasers are widely used in the fields of high resolution spectroscopy, coherent communication, radars, and gravitation-wave detection and so on. Single-frequency all-solid-state laser is one of the important research fields of all-solid-state lasers. To adopt appropriate single-frequency laser technology better and meet different requirements in applications, several techniques to realize single-frequency all-solid-state lasers were summarized, such as microcavity, coupled cavity, birefringent filters, F-P etalons in cavity, unidirectional ring cavity, twisted mode cavity. Their principles and developments at home and abroad were introduced. The characteristics and application situations were also compared and summarized.