Abstract
Photopolymer materials have received a great deal of attention because they are inexpensive, self-processing materials that are extremely versatile, offering many advantages over more traditional materials. To achieve their full potential, there is significant value in understanding the photophysical and photochemical processes taking place within such materials. This paper includes a brief review of recent attempts to more fully understand what is needed to optimize the performance of photopolymer materials for Holographic Data Storage (HDS) and Self-Written Waveguides (SWWs) applications. Specifically, we aim to discuss the evolution of our understanding of what takes place inside these materials and what happens during photopolymerization process, with the objective of further improving the performance of such materials. Starting with a review of the photosensitizer absorptivity, a dye model combining the associated electromagnetics and photochemical kinetics is presented. Thereafter, the optimization of photopolymer materials for HDS and SWWs applications is reviewed. It is clear that many promising materials are being developed for the next generation optical applications media.
Highlights
In recent years, photopolymer materials are being actively studied for practical applications such as Holographic Data Storage (HDS) [1,2,3,4,5,6,7], hybrid optoelectronics [8,9], and Self-Written Waveguides (SWWs) fabrication [10,11,12,13,14,15]
The analysis presented revealed that the index change available for each layer is the total possible change over the number of layers, analogous to results for page-based holographic multiplexing
It is clear that an extensive amount of work has been carried out to investigate the hologram and self-writing technique applied in photopolymer materials in recent years
Summary
Photopolymer materials are being actively studied for practical applications such as Holographic Data Storage (HDS) [1,2,3,4,5,6,7], hybrid optoelectronics [8,9], and Self-Written Waveguides (SWWs) fabrication [10,11,12,13,14,15]. Polymers 2017, 9, 337 nonlinear photo-absorptive effects taking place during the photo-initiation processes are included in the theoretical model In this way, the optically induced growth of SWWs in such a free radical photo-polymerization systems and the corresponding temporal and spatial light intensity distribution within the materials can be examined. We examine the self-writing mechanism providing a detailed theoretical account and reviewing some of the reliant background literature reviews of different materials are discussed with several resulting applications
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