Based on the previous study of the time varying photon absorption effects, the behavior of four different photosensitizers
in an AA/PVA photopolymer material has been further examined by using the developed 1-D Nonlocal Photopolymerization
Driven Diffusion (NPDD) model. In order to characterize the photosensitizers precisely, holographic
illuminations with different spatial frequencies are applied. Material parameters, i.e., the nonlocal response parameter,
σ, the diffusion rate of monomer, Dm, the chain initiation kinetic constant, ki, and the termination rate, kt, are extracted by
numerically fitting experimentally measure the refractive index modulation growth curve using the theoretical models.
In this paper, the four different photosensitizers under investigation are Erythrosin B; Eosin Y; Phloxine B; Rose Bengal.