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VOLUME 32 (1980) | ISSUE 11 | PAGE 639
Wave-front inversion of weak optical signals with a large reflection coefficient
The possibilities of a large (up to —105) increase of the reflection coefficient of weak signals as a result of their wave-front inversion in nonlinear media are determined. Saturation effects, in which the intensity of the inverted wave depends weakly on the intensity of the incident signal and is determined primarily by the pumping intensity, were observed.