Abstract
Large signal analysis of phase conjugation in nonlinear four-wave interactions has been described by H. Hsu [1] for the special case of a forward pump which is backward reflected to provide the counterpropagating pump. This theory provides an explicit mathematical description of four-wave interaction which is valid not only below the threshold of oscillation, but is also valid above the oscillation threshold where the undepleted pumps approximation of small signal theory breaks down. For this paper, the analysis has been generalized to encompass two separate counterpropagating pumps with an independently variable ratio of incident intensities. Thus a more thorough description of the interaction process. is provided, allowing broader application.
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