1 September 2005 The effects of inhibition during grating formation in photopolymer materials
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Abstract
Photopolymer materials are practical materials for use as holographic recording media, as they are inexpensive and self-processing. Understanding the mechanisms present during the fabrication of gratings in these materials is crucial in enabling further development. One such mechanism is the presence of an inhibition period at the start of grating growth during which the formation of polymer chains is suppressed. Some previous studies have indicated possible explanations for this effect and mathematical models have been proposed to approximate the observed behaviour. We examine the kinetic behaviour involved within the photopolymer material during recording to enable a clear picture of the photochemical processes present. Sets of experiments were carried out with the specific aim of developing an improved understanding of these processes. Here we discuss these experimental results and provide a theoretical model, which attempts to describe the inhibition process in our Acrylamide based photopolymer and predicts this behaviour under certain conditions.
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M. R. Gleeson, J. V. Kelly, C. E. Close, F. T. O'Neill, J. T. Sheridan, "The effects of inhibition during grating formation in photopolymer materials", Proc. SPIE 5939, Organic Holographic Materials and Applications III, 59390R (1 September 2005); doi: 10.1117/12.617675; https://doi.org/10.1117/12.617675
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