Analytical and experimental investigations of nonlinear dynamics of photopolymer Bragg gratings at pulse recording

In this paper, the analytical models of pulse record of diffraction gratings in photopolymer material (PPM) are presented. In the analytical model we take into consideration that record process is realized with optical pulse string. The model is developed for transmitted gratings recorded at photoinduced optical absorption. The diffraction efficiency of gratings has been calculated on the base of the analytical model. The experimental investigations of pulse recording have been carried out in HPPM-630 photopolymer material. The matching of data calculated theoretically and experimental data have been made.