Temporal analysis of grating formation in photopolymer using the nonlocal polymerization-driven diffusion model

Title: Temporal analysis of grating formation in photopolymer using the nonlocal polymerization-driven diffusion model
Authors: Kelly, John V.
Gleeson, M. R.
Close, Ciara E.
O'Neill, Feidhlim T.
Sheridan, John T.
Gallego, Sergi
Neipp, Cristian
Permanent link: http://hdl.handle.net/10197/3373
Date: 5-Sep-2005
Abstract: The nonlocal polymerization-driven diffusion model (NPDD) has been shown to predict high spatial frequency cut-off in photopolymers and to accurately predict higher order grating components. We propose an extension to the NPDD model to account for the temporal response associated with polymer chain growth. An exponential response function is proposed to describe transient effects during the polymerization process. The extended model is then solved using a finite element technique and the nature of grating evolution examined in the case when illumination is stopped prior to the saturation of the grating recording process. Based on independently determined refractive index measurements we determine the temporal evolution of the refractive index modulation and the resulting diffraction efficiency using rigorous coupled wave theory. Material parameters are then extracted based on fits to experimental data for nonlinear and both ideal and non-ideal kinetic models.
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): 2005 Optical Society of America
Keywords: Volume holographic gratings;Holographic recording materials;Holographic optical elements
Subject LCSH: Holographic storage devices (Computer science)
Photopolymerization
Photopolymers
Diffraction gratings
DOI: 10.1364/OPEX.13.006990
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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