简述了环形激光器——激光陀螺仪的基本原理、分类和重要技术问题,报道了近期国内、外研究发展动态及应用情况。六十年代初第一台激光器刚刚问世,人们就想到利用这项新技术和Sagnac效应来做测量转动角速度的惯性敏感元件。 The basic principle, classification and important technical problems of ring laser - laser gyro are briefly described, and the recent developments and applications of the research at home and abroad are reported. The first laser in the early 1960s was just released, and people came up with the new technology and the Sagnac effect to make inertial sensors that measure the angular velocity of rotation.