Analysis of PEA photopolymers at zero spatial frequency limit

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Title: Analysis of PEA photopolymers at zero spatial frequency limit
Authors: Gallego, Sergi | Márquez, Andrés | Riquelme Morell, Marina | Neipp, Cristian | Ortuño, Manuel | Beléndez, Augusto | Pascual, Inmaculada
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías
Keywords: Holography | Holographic data storage | Holographic recording materials | Diffractive optics | Liquid crystals
Knowledge Area: Óptica | Física Aplicada
Date Created: Feb-2012
Issue Date: 1-Jun-2012
Publisher: SPIE, The International Society for Optics and Photonics
Citation: GALLEGO RICO, Sergi, et al. "Analysis of PEA photopolymers at zero spatial frequency limit". En: Optical Modelling and Design II / edited by Frank Wyrowski, John T. Sheridan, Jani Tervo, Youri Meuret. Bellingham, Wash. : SPIE, 2012. (Proceedings of SPIE; Vol. 8429). ISBN 978-0-81949-121-3, pp. 842925-1/8
Abstract: The PEA photopolymer is composed of dipentaerythritol penta/hexa-acrylate as monomer and binder, N-vinyl pirrolidone as crosslinker, ethyl eosin as dye and N-methyl diethanolamine as radical generator. This photopolymer is suitable to work with dispersed liquid crystal molecules in dynamic holographic and diffractive applications. In order to characterize these materials we have analyzed the behaviour of different compositions at zero spatial frequency limit. This method is based on an interferometer that has been successfully applied in the phase-shift versus applied voltage characterization of liquid-crystal displays, in addition to that it has been applied to characterize PVA/AA and PVA/NaAO photopolymers. In PEA case there is no shrinkage since the photopolymer is coverplated. Samples have a glass substrate as the cover plate. In our analysis we have studied the importance of the monomer, crosslinker and crystal liquid molecules concentrations, in the phase shift produced in the layer during photopolymerization process.
Sponsor: This work was supported by the Ministerio de Ciencia e Innovación of Spain under projects FIS2011-29803-C02-01 and FIS2011-29803-C02-02 and by the Generalitat Valenciana of Spain under project PROMETEO/2011/021.
URI: http://hdl.handle.net/10045/24904
ISBN: 978-0-81949-121-3
ISSN: 0277-786X
DOI: 10.1117/12.921789
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 2012 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, vol. 8429, and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Peer Review: si
Publisher version: http://dx.doi.org/10.1117/12.921789
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