The operating characteristics of optical resonators with phase-conjugate mirrors are discussed. Degenerate four-wave mixing is assumed to be the process giving rise to the phase-conjugated phase fronts. We have found that these resonators are unconditionally stable, have no longitudinal mode conditions that invoke the length of the cavity, and have smooth transverse mode structures. Computer simulation results pertaining to the properties of the lowest-order modes and the effect of mirror errors on these modes are also discussed.
© 1980 Optical Society of America
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