Dependence of Lock-in Threshold and Winking Pattern on the Phase-Interaction of Scattering Waves in the Ring Laser

Relationships different from previously reported information about the direction of a ring-laser's rotation and winking pattern were observed. Also, the phase difference was observed between the periodic change of the winking intensity and the lock-in threshold when two mirrors are moved while interlocked with a constant optical path length. These phenomena could be satisfactorily explained by introducing the resultant change in the amplitude and the phase of the composite scattered waves from the displacement of the mirrors in self-consistent equations. it was shown that the inequality of the back-scattering rate among the three mirrors and the anisotropy of that to the oppositely directed traveling waves affected the above-mentioned phenomena in an important way.