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VOLUME 37 (1983) | ISSUE 3 | PAGE 150
Parametric interaction of oppositely propagating light waves of identical frequency
Waves of identical frequency in media exhibiting a reactive (nonabsorbing) nonlinearity may exchange energy with each other. The exchange results from a spatial modulation of the interfering light fields by the gyration vector of the magnetic medium. There is a threshold in the dependence of the gain on the wave power; the gain also depends on the deviation of the wave polarization from circular. The gain reaches a maximum in the case of a linearly polarized intense wave and vanishes in the case of a circular polarization.