LASER GYROSYSTEM

摘要

A compact laser gyrosystem comprises a main gyrostructure 1 of cylindrical configuration and having an internally reflecting surface 1a. Entrance and exit planes 1b and 1 c are defined in the gyrostructure and a beam splitter 2 is positioned therebetween. Light from laser source 3 is split by the beam splitter and follows two polygonal paths within the gyrostructure in opposite directions, emerging to respective detectors 4 and 5. Rotation of the gyrostructure about its axis results in the movement of interference fringes which are detected by the detectors, and arithmetic logic unit 6 calculates the angular velocity. The number of turns made by both laser beams inside the gyrostructure 1 can be altered by changing the angle of incidence of the laser beam on the gyrostructure.