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已知,氦氖环形激光器已成为测量角速度的转换器。用环形激光器测量角速度的原理是基于广义相对论。根据这个理论,在转动系统中,相反方向传播的一对光束经过闭合回路的时间读数是不相同的。环形激光器输出频率△ω和角速度Ω的相互关系通常表示如下:
It is known that a helium-neon ring laser has become a transducer for measuring angular velocity. The principle of measuring the angular velocity with a ring laser is based on general relativity. According to this theory, in a rotating system, the time readings of a pair of beams propagating in the opposite direction through the closed loop are not the same. The relationship between the ring laser output frequency Δω and the angular velocity Ω is generally expressed as follows: