Effects in reconstruction of diffraction gratings multiplexed in acrylamide photopolymers

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Title: Effects in reconstruction of diffraction gratings multiplexed in acrylamide photopolymers
Authors: Ortuño, Manuel | Gallego, Sergi | Márquez, Andrés | Neipp, Cristian | 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
Keywords: Holography | Holographic recording materials | Photopolymers | Multiplex holography
Knowledge Area: Óptica | Física Aplicada
Date Created: 2005
Issue Date: 8-Jun-2005
Publisher: SPIE, The International Society for Optical Engineering
Citation: ORTUÑO SÁNCHEZ, Manuel, et al. "Effects in reconstruction of diffraction gratings multiplexed in acrylamide photopolymers". En: Opto-Ireland 2005: Photonic Engineering : 4-6 April 2005, Dublin, Ireland. Bellingham, Wash. : SPIE, 2005. (Proceedings of SPIE; Vol. 5827). ISBN 978-0-81945-812-4, pp. 314-321
Abstract: In this study we focus on the properties of acrylamide photopolymer layers about 1 mm thick with hydrofilic binder of polyvinyl alcohol and yellowish eosin as dye. We consider peristrophic multiplexing. Note the differences in the reconstruction step between the next two peristrophic multiplexing schemes: rotation axis parallel and rotation axis perpendicular to the hologram media. In the first case (parallel) a very thick media allows for a high storage density and a highly selective individual hologram reconstruction thanks to the Bragg angular selectivity. In the second case (perpendicular), an additional optical system is necessary to separate the various simultaneous holograms reconstructed. We show experimental evidence for the two schemes. We analyze the behaviour of the material when multiplexing diffraction gratings using peristrophic multiplexing. In the reconstruction step we observe differences, between the various multiplexed holograms, in their angular response shape. We consider that this is due to polymer diffusion in exposed areas or to the dye concentration variation with registered holograms number, because xantene dyes are bleached at the initiation step of radical polymerization reaction. The photopolymer composition is an important factor to be taken into account when single or multiple holograms are registered. The differences in both cases are considered in this work.
Sponsor: This work was supported by the "Dirección General de Investigación y Transferencia Tecnológica", Generalitat Valenciana, Spain (projects GV04A/547 and GV04A/565).
URI: http://hdl.handle.net/10045/9365
ISBN: 978-0-81945-812-4
ISSN: 0277-786X
DOI: 10.1117/12.604804
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 2005 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, vol. 5827, 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/10.1117/12.604804
Appears in Collections:INV - GHPO - Artículos de Revistas

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