Optimisation of photopolymers for holographic applications using the Non-local Photo-polymerization Driven Diffusion model

Abstract

An understanding of the photochemical and photo-physical processes, which occur during photopolymerization is of extreme importance when attempting to improve a photopolymer material's performance for a given application. Recent work carried out on the modelling of the mechanisms which occur in photopolymers during-and post-exposure, has led to the development of a tool, which can be used to predict the behaviour of these materials under a wide range of conditions. In this paper, we explore this Non-local Photo-polymerisation Driven Diffusion model, illustrating some of the useful trends, which the model predicts and we analyse their implications on the improvement of photopolymer material performance. 66-70 (1999). 35. M. Toishi, T. Tanaka, K. Watanabe, and K. Betsuyaku, "Analysis of photopolymer media of holographic data storage using non-local polymerization driven diffusion model," Jpn. ©2010 Optical Society of America

Photopolymers for Use as Holographic Media

“…It is these reactions which are the basis of the theoretical models which are used as photopolymer material optimisation tools and are the fundamental building blocks of the Non-local Photo-polymerisation Driven Diffusion (NPDD) model [11,[26][27][28][29][30][31][32][33][34].…”

“…The photochemical processes, which are present during photopolymerization, are complex [11,[26][27][28][29][30][31][32][33][34][38][39][40][41][42][43], however an understanding of these processes is of utmost importance if a practical model is to be developed. In a recent review, [44] many of the assumptions made in developing photochemical models of free radical photo-polymerisation were discussed, [38][39][40][41][42][43].…”

“…In order to maximise the potential of these materials for various applications, the necessity for a physically comprehensive theoretical model of the effects which occur during photo-polymerization is becoming ever more important. Providing such a model will enable potential trends in a material's performance to be recognized and optimised, [27]. Such models allow simulations of ratios of various key material components to be made, yielding indications of the most suitable material compositions in order to improve material performance.…”

“…In this chapter we examine some recently published results on the Non-local Photopolymerization Driven Diffusion (NPDD) model, [26][27][28][29][30][31][32]. This model provides a comprehensive theoretical representation of the processes, which occur during free radical photo-polymerization.…”

“…This model provides a comprehensive theoretical representation of the processes, which occur during free radical photo-polymerization. The physically realistic model enables predictions to be made about a number of very different photopolymer materials [26][27][28][29][30][31][32]. We present several extensions to the previous model in particular allowing for spatially and temporally varying primary radical generation, oxygen inhibition, dark reactions and chain transfer effects.…”