Monomer diffusion rates in photopolymer material. Part I. Low spatial frequency holographic gratings

Title: Monomer diffusion rates in photopolymer material. Part I. Low spatial frequency holographic gratings
Authors: Close, Ciara E.
Gleeson, M. R.
Sheridan, John T.
Permanent link: http://hdl.handle.net/10197/3326
Date: 1-Mar-2011
Abstract: For photopolymers, knowing the rate of diffusion of the active monomer is important when modeling the material evolution during recording in order to understand and optimize their performance. Unfortunately, a confusingly wide range of values have been reported in the literature. Re-examining these results, experiments are carried out for both coverplated (sealed) and uncoverplated material layers and the measurements are analyzed using appropriate models. In this way, a more detailed analysis of the diffraction processes taking place for large-period gratings is provided. These results, combined with those in Part II, provide unambiguous evidence that the monomer diffusion rate in a commonly used acrylamide polyvinyl alcohol-based material is of the order of 10−10 cm2=s. This value closely agrees with the predictions of the nonlocal polymerization-driven diffusion model.
Funding Details: Science Foundation Ireland
Irish Research Council for Science, Engineering and Technology
Type of material: Journal Article
Publisher: Optical Society of America
Copyright (published version): 2011 Optical Society of America
Subject LCSH: Photopolymers
Monomers--Diffusion rate
Diffraction gratings
Holography
DOI: 10.1364/JOSAB.28.000658
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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