Volume holograms in photopolymers: comparison between analytical and rigorous theories

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Title: Volume holograms in photopolymers: comparison between analytical and rigorous theories
Authors: Gallego, Sergi | Neipp, Cristian | Estepa Espada, Luis Alberto | Ortuño, Manuel | Márquez, Andrés | Francés, Jorge | Pascual, Inmaculada | Beléndez, Augusto
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: Holographic materials | Photopolymers | Volume holograms
Knowledge Area: Física Aplicada | Óptica
Date Created: 4-Jun-2012
Issue Date: 15-Aug-2012
Publisher: MDPI - Open Access Publishing
Citation: GALLEGO RICO, Sergi, et al. "Volume holograms in photopolymers: comparison between analytical and rigorous theories". Materials. Vol. 5, No. 8 (Aug. 2012). ISSN 1996-1944, pp. 1373-1388
Abstract: There is no doubt that the concept of volume holography has led to an incredibly great amount of scientific research and technological applications. One of these applications is the use of volume holograms as optical memories, and in particular, the use of a photosensitive medium like a photopolymeric material to record information in all its volume. In this work we analyze the applicability of Kogelnik's Coupled Wave theory to the study of volume holograms recorded in photopolymers. Some of the theoretical models in the literature describing the mechanism of hologram formation in photopolymer materials use Kogelnik's theory to analyze the gratings recorded in photopolymeric materials. If Kogelnik's theory cannot be applied is necessary to use a more general Coupled Wave theory (CW) or the Rigorous Coupled Wave theory (RCW). The RCW does not incorporate any approximation and thus, since it is rigorous, permits judging the accurateness of the approximations included in Kogelnik's and CW theories. In this article, a comparison between the predictions of the three theories for phase transmission diffraction gratings is carried out. We have demonstrated the agreement in the prediction of CW and RCW and the validity of Kogelnik's theory only for gratings with spatial frequencies higher than 500 lines/mm for the usual values of the refractive index modulations obtained in photopolymers.
Sponsor: This work was supported by the “Ministerio de Economía y Competitividad” of Spain (projects FIS2011-29803-C02-01 and FIS2011-29803-C02-02) and by the “Generalitat Valenciana” of Spain (projects PROMETEO/2011/021 and ISIC/2012/013).
URI: http://hdl.handle.net/10045/23755
ISSN: 1996-1944
DOI: 10.3390/ma5081373
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2012 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Peer Review: si
Publisher version: http://dx.doi.org/10.3390/ma5081373
Appears in Collections:INV - GHPO - Artículos de Revistas
INV - Acústica Aplicada - Artículos de Revistas

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