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A new method generating multiple beams mutually pumped phase conjugation (MMPPC) in a photorefractive Ba 1-x Sr x TiO 3 crystal is demonstrated, in which a pumping beam is incident upon a face of the crystal and two signal beams are introduced into +c face of the crystal with the almost same incident angle and position. The time evolution of the phase conjugations from signal beams and the dependence of phase conjugate reflectivities on the input beam intensity ratios are presented. Also, the amplitude coupled wave equations based on the model of two interaction reigns is derived. The results obtained by numerical calculation of the corresponding coupled wave equations show qualitative agreement with the experimental results.
A new method generating multiple beams mutually pumped phase conjugation (MMPPC) in a photorefractive Ba 1-x Sr x TiO 3 crystal is demonstrated in which a pumping beam is incident upon a face of the crystal and two signal beams are introduced into + The time evolution of the phase conjugations from signal beams and the dependence of phase conjugate reflectivities on the input beam intensity ratios are presented. Also, the amplitude evolution wave equations based on the model of two interaction reigns is derived. The results obtained by numerical calculation of the corresponding coupled wave equations show qualitative agreement with the experimental results.