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Polymers 2017, 9(9), 395;

Optimization of Photopolymer Materials for the Fabrication of a Holographic Waveguide

I.U. Física Aplicada a las Ciencias y las Tecnologías, Universidad de Alicante, P.O. Box 99, E-03080 Alicante, Spain
Department de Física, Ing. de Sistemas y Teoría de la Señal, Universidad de Alicante, P.O. Box 99, E-03080 Alicante, Spain
Author to whom correspondence should be addressed.
Received: 10 July 2017 / Revised: 22 August 2017 / Accepted: 24 August 2017 / Published: 26 August 2017
(This article belongs to the Special Issue Photo-Responsive Polymers)
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In this work, we present a method of manufacturing an optical see-through display based on a holographic waveguide with transmission holograms that couple the incident light between air and the glass substrate, accomplishing total internal reflection. The holograms (slanted transmission gratings with a spatial frequency of 1700 lines/mm) were recorded on a polyvinyl alcohol acrylamide (PVA/AA) photopolymer. We will also show that the addition of N,N′-methylene-bis-acrylamide (BMA) to the composition of the photopolymer allows the achievement of the index modulations necessary to obtain high diffraction efficiencies in non-slanted diffraction gratings of 1000 and 2200 lines/mm, and also in slanted gratings of 1700 lines/mm (which are the base of the optical system proposed). View Full-Text
Keywords: photopolymers; diffraction gratings; holographic waveguide; holography photopolymers; diffraction gratings; holographic waveguide; holography

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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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Neipp, C.; Francés, J.; Martínez, F.J.; Fernández, R.; Alvarez, M.L.; Bleda, S.; Ortuño, M.; Gallego, S. Optimization of Photopolymer Materials for the Fabrication of a Holographic Waveguide. Polymers 2017, 9, 395.

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