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Materials 2016, 9(3), 195;

Blazed Gratings Recorded in Absorbent Photopolymers

Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías, Universidad de Alicante, Apartado 99, E03080 Alicante, Spain
Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal. Universidad de Alicante, Apartado 99, E03080 Alicante, Spain
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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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

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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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