Abstract

Photopolymers have been widely used as holographic recording materials owing to their self-processing capability and low cost with high fidelity reconstruction and low loss. The non-local photopolymerization-driven diffusion (NPDD) model was introduced to explain the observed drop-off in the material’s high spatial frequency (SF) response (> 2000 lines/mm) [1]. To understand the SF response characteristics further, Guo et al. considered the extension of the NPDD model that included the chain transfer mechanism [2, 3]. Their extended NPDD model includes the effects of: (i) the kinetics of the major photochemical processes; (ii) the temporally and spatially varying photon absorption; (iii) the kinetics of chain transfer; and (iv) the non-local material response. The extended NPDD model suggests that one possible way to improve the material’s SF response at high SFs is indeed the addition of chain transfer agents (CTAs) [2, 3]. In this talk we describe the experimental characterization of volume holographic recording in a polyvinyl alcohol-acrylamide (PVA/AA) system doped with different types of CTAs to examine the prediction of the extended NPDD model and to extract material’s polymerization kinetic parameters by using the model.

© 2013 Japan Society of Applied Physics, Optical Society of America