Abstract

Optical resonators containing a phase conjugate mirror (PCM) have been a subject of great interest, where the PCM is employed as an end mirror of the resonator cavity for intracavity aberration correction.¹ Recent theoretical analysis indicates that the insertion of a PCM inside a ring laser cavity results in a reduction of the lock-in threshold and reduces the imbalance between the amplitudes of the oppositely directed traveling waves.² In the extreme case of phase conjugate oscillation without conventional gain, lock-in can be completely eliminated.³

© 1990 Optical Society of America