Abstract
We propose a new formula to describe the dynamics of holographic gratingformation under low intensity pulse exposures in cationic photopolymers,in which the dark reaction contributes dominantly to the gratingstrength. The formula is based on the living polymerization mechanismand the diffusion-free approximation. The analytical solution indicatesthat the grating formation time depends on the termination rateconstant, while the final grating strength depends linearly on the totalexposure energy. These theoretical predictions are verifiedexperimentally using the Aprilis HMC-400 μm photopolymer. The resultscan provide guidelines for the control and optimization of theholographic recording conditions in practical applications.
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