Influence of 4,4’-azobis (4-cyanopentanoic acid) in Transmission and Reflection Gratings Stored in a PVA/AA Photopolymer
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Título: | Influence of 4,4’-azobis (4-cyanopentanoic acid) in Transmission and Reflection Gratings Stored in a PVA/AA Photopolymer |
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Autor/es: | Fernandez-Varo, Helena | Fuentes Rosillo, Rosa | Beléndez, Augusto | Pascual, Inmaculada |
Grupo/s de investigación o GITE: | Holografía y Procesado Óptico |
Centro, Departamento o Servicio: | 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 |
Palabras clave: | Holography | Photopolymers | Holographic recording materials |
Área/s de conocimiento: | Óptica | Física Aplicada |
Fecha de creación: | 27-ene-2016 |
Fecha de publicación: | 15-mar-2016 |
Editor: | MDPI |
Cita bibliográfica: | Fernandez E, Fuentes R, Belendez A, Pascual I. Influence of 4,4’-azobis (4-cyanopentanoic acid) in Transmission and Reflection Gratings Stored in a PVA/AA Photopolymer. Materials. 2016; 9(3):194. doi:10.3390/ma9030194 |
Resumen: | Holographic transmission gratings with a spatial frequency of 2658 lines/mm and reflection gratings with a spatial frequency of 4553 lines/mm were stored in a polyvinyl alcohol (PVA)/acrylamide (AA) based photopolymer. This material can reach diffraction efficiencies close to 100% for spatial frequencies about 1000 lines/mm. However, for higher spatial frequencies, the diffraction efficiency decreases considerably as the spatial frequency increases. To enhance the material response at high spatial frequencies, a chain transfer agent, the 4,4’-azobis (4-cyanopentanoic acid), ACPA, is added to the composition of the material. Different concentrations of ACPA are incorporated into the main composition of the photopolymer to find the concentration value that provides the highest diffraction efficiency. Moreover, the refractive index modulation and the optical thickness of the transmission and reflection gratings were obtained, evaluated and compared to procure more information about the influence of the ACPA on them. |
Patrocinador/es: | This work was supported by the “Generalitat Valenciana” (Spain) under projects PROMETEOII/2015/015 and ISIC/2012/013 and by “Ministerio de Ciencia e Innovación” (Spain) under projects FIS2014-56100-C2-1-P and FIS2015-66570-P. |
URI: | http://hdl.handle.net/10045/53965 |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma9030194 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.3390/ma9030194 |
Aparece en las colecciones: | INV - GHPO - Artículos de Revistas |
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