LED-Cured Reflection Gratings Stored in an Acrylate-Based Photopolymer

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Title: LED-Cured Reflection Gratings Stored in an Acrylate-Based Photopolymer
Authors: Ramirez, Manuel G. | Sirvent, Daniel | Morales-Vidal, Marta | Ortuño, Manuel | Martínez Guardiola, Francisco Javier | Francés, Jorge | Pascual, Inmaculada
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías
Keywords: Holographic reflection gratings | Low-toxicity photopolymer | Volume holography | LED-curing
Knowledge Area: Óptica | Física Aplicada
Date Created: 16-Mar-2019
Issue Date: 6-Apr-2019
Publisher: MDPI
Citation: Ramírez MG, Sirvent D, Morales-Vidal M, Ortuño M, Martínez-Guardiola FJ, Francés J, Pascual I. LED-Cured Reflection Gratings Stored in an Acrylate-Based Photopolymer. Polymers. 2019; 11(4):632. doi:10.3390/polym11040632
Abstract: The storage of volume holographic reflection gratings in low-toxicity photopolymers represents a challenge at present since they can be used in many important applications such as biosensors and holographic optical elements. In this context, an acrylate-based photopolymer developed in our research group was employed to study the recording of unslanted holographic reflection gratings at high spatial frequencies. The optimal preparation conditions of the photopolymer layers were determinated. The diffraction efficiencies are measured in both recording and curing stage and a comparative study of these values was realized. In addition, a theoretical study using Kogelnik’s coupled wave theory was carried out with the aim of understanding the diffraction efficiency behaviour of both processes. In this work, a maximum diffraction efficiency of 14.1% was reached after a curing process in 150 µm layers at a recording wavelength of 488 nm. This value represents a good result compared to that reported in the literature and opens the way to reflection mode holography research using low-toxicity material.
Sponsor: Ministerio de Ciencia, Innovación y Universidades, Spain, under projects FIS2017-82919-R (MINECO/AE/FEDER, UE) and FIS2015-66570-P (MINECO/FEDER); Generalitat Valenciana, Spain, under project CDEIGENT/2018/024 and Universidad de Alicante under project GRE17-06.
URI: http://hdl.handle.net/10045/90967
ISSN: 2073-4360
DOI: 10.3390/polym11040632
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2019 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 (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Peer Review: si
Publisher version: https://doi.org/10.3390/polym11040632
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