EFFECT OF STRUCTURE RELAXATION ON THE HOLOGRAPHIC RECORDING IN AMORPHOUS AS2S3 FILMS

Results of the experimental studies of holographic recording in a-As2S 3 films, such as exposure and intensity dependences, spatial frequency dependence, are reported. Several peculiarities are found including r ecording intensity threshold, nonmonotonical intensity dependences, no nlinear exposure curves, the change of the spatial frequency response due to film aging. These peculiarities are explained in terms of the p henomenological model which is based on the simultaneous action of the photostructural changes and the relaxational structural changes.