Noise gratings recorded with single-beam exposures in liquid holographic photopolymers

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Title: Noise gratings recorded with single-beam exposures in liquid holographic photopolymers
Authors: Fimia Gil, Antonio | Beléndez, Augusto | Carretero López, Luis
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad Miguel Hernández. Departamento de Ciencia de Materiales, Óptica y Tecnología Electrónica
Keywords: Holography | Holographic recording materials | Photopolymers | Noise gratings
Knowledge Area: Óptica | Física Aplicada
Date Created: 1995
Issue Date: 22-Apr-1996
Publisher: SPIE, The International Society for Optical Engineering
Citation: FIMIA GIL, Antonio; BELÉNDEZ VÁZQUEZ, Augusto; CARRETERO LÓPEZ, Luis. "Noise gratings recorded with single-beam exposures in liquid holographic photopolymers". En: Holographic materials II : 31 January, 1996, San Jose, California / T. John Trout, chair-editor. Bellingham, Wash. : SPIE, 1996. (Proceedings of SPIE; Vol. 2688). ISBN 978-0-81942-062-6, pp. 135-140
Abstract: Photopolymers can be considered viable holographic material because of their many attractive features. Among these we could mention their ability to self-develop, the fact dry processing can be used with them, their good stability and thick emulsion layers, their haigh sensitivity, diffraction efficiency and resolution, and finally their non-volatile storage. Among the different sources of noise in holography, noise gratings are due to scattering from inhomogeneities in the recording material and have an important spurious effect on volume holography. Their effect at reconstruction is to bring about a reduction in diffraction efficiency and signal-to-noise ratio. Even though these scatter gratings have been seen in PMMA and other photopolymers, and in photorefractive crystals, they have really only been analyzed extensively for photographic emulsions, and information about these grating structures in photopolymers is quite scarce. In this communication we present the observation of noise gratings in an acrylamide photopolymer for use in real time holography. The possibilities of this noise source as a optimization technique for this type of materials are pointed out. Noise gratings in these polymer films were created upon exposure to a He-Ne laser collimated beam at 633 nm without any subsequent processing step. The influence of intensity on recording noise gratings and angular selectivity are reported showing its influence on the recording of this type of noise source in real time holographic materials.
Sponsor: This work was supported by the "Comisión Interministerial de Ciencia y Tecnología" (Project MAT93-0369), Spain.
ISBN: 978-0-81942-062-6
ISSN: 0277-786X
DOI: 10.1117/12.238539
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 1996 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, Vol. 2688, and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Peer Review: si
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