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Materials 2016, 9(3), 195; doi:10.3390/ma9030195

Blazed Gratings Recorded in Absorbent Photopolymers

1
Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías, Universidad de Alicante, Apartado 99, E03080 Alicante, Spain
2
Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal. Universidad de Alicante, Apartado 99, E03080 Alicante, Spain
3
Departamento de Óptica, Farmacología y Anatomía. Universidad de Alicante. Apartado 99, E03080 Alicante, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Manuel Francisco Ortuño Sánchez
Received: 25 January 2016 / Revised: 29 February 2016 / Accepted: 8 March 2016 / Published: 15 March 2016
(This article belongs to the Special Issue Photopolymers for Holographic Applications)
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Abstract

Phase diffractive optical elements, which have many interesting applications, are usually fabricated using a photoresist. In this paper, they were made using a hybrid optic-digital system and a photopolymer as recording medium. We analyzed the characteristics of the input and recording light and then simulated the generation of blazed gratings with different spatial periods in different types of photopolymers using a diffusion model. Finally, we analyzed the output and diffraction efficiencies of the 0 and 1st order so as to compare the simulated values with those measured experimentally. We evaluated the effects of index matching in a standard PVA/AA photopolymer, and in a variation of Biophotopol, a more biocompatible photopolymer. Diffraction efficiencies near 70%, for a wavelength of 633 nm, were achieved for periods longer than 300 µm in this kind of materials. View Full-Text
Keywords: photopolymers; optical recording materials; diffractive elements photopolymers; optical recording materials; diffractive elements
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fernández, R.; Gallego, S.; Márquez, A.; Navarro-Fuster, V.; Beléndez, A. Blazed Gratings Recorded in Absorbent Photopolymers. Materials 2016, 9, 195.

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