Multiple-Conjugation Expansion: An Alternative Approach to Scattering in the Presence of a Phase-Conjugate Mirror
One of the main applications of the technique of nonlinear optical phase conjugation* concerns the elimination or reduction of distortions introduced into an electromagnetic wave by some scattering medium such as a turbulent atmosphere or an imperfect optical element.l,2 An analysis of the degree of correction of wavefront distortions achievable by this method requires the solution of the electromagnetic scattering problem under the influence of the phase-conjugating device. To this end a new integral equation was recently derived3–5 for the scattering of an electromagnetic field in the presence of a phase-conjugate mirror (PCM). We begin by briefly recalling this integral equation and the approximations that are involved. For the sake of simplicity, we consider here only scalar wavefields.
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