TEMPORAL BEHAVIOR OF THE PHASE-CONJUGATE WAVE OBTAINED BY MEANS OF A BATIO3 CRYSTAL IN A CAT CONFIGURATION

We have built an automated and computer driven experimental set-up all owing systematic determinations of the built up and the temporal behav iour of the phase conjugate optical wave produced by a self-pumped pha se conjugate mirror (SPPCM) using photorefractive crystals. Experiment s have been carried out on two different barium titanate (BaTiO3) samp les to obtain experimentally the influence of temperature and the geom etrical parameters on the reflectivity of the mirror, its time constan t and stability. The dependence of the phase conjugate wave (PCW) inte nsity on position and incident angle of the incident input beam is dis cussed on the basis of the MacDonald-Feinberg model in which we assume a distribution of fanning.