MODE STRUCTURE AND THRESHOLDS FOR A MUTUA L PHASE CONJUGATOR WITH THIN NONLINEAR LAYERS

A theoretical investigation is reported of the suppression of noise wa ves in a thin-layer mutual conjugator. The methods of matrix and wave optics are used t show that displacement of thin layers from the plane s of exact conjugation in the direction towards a lens results in mutu al phase conjugation of Gaussian beams when the self-oscillation thres hold is exceeded slightly.