Characterization and comparison of different photopolymers for low spatial frequency recording

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Title: Characterization and comparison of different photopolymers for low spatial frequency recording
Authors: Fernandez, Roberto | Gallego, Sergi | 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: Holography | Optical recording materials | Diffractive optics | Holographic recording materials
Knowledge Area: Óptica | Física Aplicada
Date Created: 2-Dec-2014
Issue Date: 13-Mar-2015
Publisher: Elsevier
Citation: Optical Materials. 2015, 44: 18-24. doi:10.1016/j.optmat.2015.02.025
Abstract: Free-radical photopolymer materials can be fabricated using a wide range of monomers, binders, dyes, etc. It was shown that in some photopolymers the surface and the internal diffusion for acrylamide materials are very different and also it was demonstrated the viability of acrylamide materials to achieve 2π phase depth for low spatial diffractive optical elements. Building on the work developed previously, in this paper, a characterization and a comparison is carried out for three different photopolymers: crosslinked acrylamide based photopolymers, a biophotopol and an H-PDLC material. We have measured the motion of the components inside the material and through the surface using a new index matching component and through the surface. We have studied the introduction of different crosslinkers in order to increase the refractive index modulation and to reduce the thickness required to achieve a phase depth higher than 2π in the diffraction optical elements.
Sponsor: The work was supported by the “Ministerio de Economía y Competitividad” of Spain under projects FIS2011-29803-C02-01 and FIS2011-29803-C02-02 and by the “Generalitat Valenciana” of Spain under projects PROMETEO/2011/021 and ISIC/2012/013.
ISSN: 0925-3467 (Print) | 1873-1252 (Online)
DOI: 10.1016/j.optmat.2015.02.025
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2015 Elsevier B.V.
Peer Review: si
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