Gleeson, M. R. and Guo, J. and Sheridan, J. T. (2011) NPDD model: A tool for photopolymer enhancement. In: Holography: Advances and Modern Trends, 18-20 April, Prague, Czech Republic.

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Abstract

The use of theoretical models to represent the photochemical effects present during the formation of spatially and temporally varying index structures in photopolymers, is critical in order to maximise a material’s potential. One such model is the Non-local Photo-Polymerization Driven Diffusion (NPDD) model. Upon application of appropriate physical constraints for a given photopolymer material, this model can accurately quantify all major photochemical processes. These include i) non-steady state kinetics, (ii) non-linearity iii) spatially non-local polymer chain growth, iv) time varying primary radical production, v) diffusion controlled effects, vi) multiple termination mechanisms, vii) inhibition, (viii) polymer diffusion and ix) post-exposure effects. In this paper, we examine a number of predictions made by the NPDD model. The model is then applied to an acrylamide/polyvinylalcohol based photopolymer under various recording conditions. The experimentally obtained results are then fit using the NPDD model and key material parameters describing the material’s performance are estimated. The ability to obtain such parameters facilitates material optimisation for a given application.

Item Type:	Conference or Workshop Item (Paper)
Keywords:	Holography; holographic recording material; photopolymer inhibition;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics Faculty of Science and Engineering > Chemistry Faculty of Science and Engineering > Computer Science
Item ID:	3588
Depositing User:	Michael Gleeson
Date Deposited:	24 Apr 2012 11:37
Refereed:	Yes
Funders:	Irish Research Council for Science, Engineering and Technology
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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