文大讨论了双稳频双频激光高斯光束光拍检测程差的方法。报道了用这种方法检测微小光程差,其灵敏度达1A。

A method for the measurement of optical path difference by phase difference of optical beat is discussed with respect to a Gauss beam from a twin-frequency laser with its light frequency and frequency difference stabilized. The measurement of tiny path difference is performed bv this method with a measurement sensitivity of the order of 1A.