Temporal analysis of grating formation in photopolymer using the nonlocal polymerization-driven diffusion model
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|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.
|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)
|DOI:||10.1364/OPEX.13.006990||Language:||en||Status of Item:||Not peer reviewed|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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