Theoretical model and analysis of nonstationary postexpositional amplification of holograms in photorefractive photopolymer materials

One of the holographic mediums used for optical data storage is the organic light sensitive photopolymer materials. The peculiarity of the photopolymer materials is the opportunity of postexpositional amplification of the holograms under finite time of the recording process. The main reason of this effect is the diffusion and displacement processes of components of the photopolymer material. In this work we represent the analytical model of postexpositional amplification process in photopolymer material which are based on the theory of holograms recording in photopolymer developed by us. In particularly we have used of Lorentz-Lorenz relation, equations of radical photopolymerization kinetics and diffusion processes for finding the holographic grating amplitude when the polymer expositional recording time is finite.