Theory of intracavity-pumped photorefractive phase-conjugate mirror

We present a new type of phase-conjugate mirror that is based on an externally driven Fabry-Perot interferometer with intracavity-pumped photorefractive material, which is probed by the signal beam. It is shown theoretically that such a configuration leads to multivalued solutions and possibly to bistability. This configuration also permits optical control of the resonator output and electrical control of the phase-conjugate reflectivity

Optical thresholding and switching using a fiber-coupled phase-conjugate mirror

A fiber-coupled-ring passive phase-conjugate mirror is used to achieve mutual thresholding free of bistability effects and to obtain switching among several mutually incoherent light beams