Maximum effective optical thickness of the gratings recorded in photopolymers

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Title: Maximum effective optical thickness of the gratings recorded in photopolymers
Authors: Gallego, Sergi | Ortuño, Manuel | Neipp, Cristian | Márquez, Andrés | Beléndez, Augusto | Pascual, Inmaculada
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
Keywords: Holography | Holographic recording materials | Volume holograms | Photopolymers
Knowledge Area: Óptica | Física Aplicada
Date Created: 2005
Issue Date: 8-Jun-2005
Publisher: SPIE, The International Society for Optical Engineering
Citation: ORTUÑO SÁNCHEZ, Manuel, et al. "Maximum effective optical thickness of the gratings recorded in photopolymers". En: Opto-Ireland 2005: Photonic Engineering : 4-6 April 2005, Dublin, Ireland. Bellingham, Wash. : SPIE, 2005. (Proceedings of SPIE; Vol. 5827). ISBN 978-0-81945-812-4, pp. 107-117
Abstract: In recent years the development of new holographic memories based in photopolymers have a great goal. A new commercial holographic memories has been optimized by Aprilis and Inphase. The advantages of this type of materials to store information are well know: their high capacity and their fast random access. In the behaviour of this type of material two important factors determinate the quality of the material, the capacity and the energetic sensitivity. The base of the high capacity of the holographic memories is the high Bragg’s angular selectivity. The narrow curve of the angular scan are obtained when the effective optical thickness of material is high and permits record many holograms turning the plate only 3°. Others important factors are the dye and monomer concentration, high values of the concentrations origins high values of the index modulation (higher stored capacity, better energetic sensitivity and large dynamic range) but in when the dye and monomer concentrations are high all the light is absorbed in the first 200 μm of the material and the effective optical thickness of the grating recorded decrease (decrease the stored capacity) and the values of the noise are high in this case. In this work this attenuation of the index modulation in depth is having into account using rigorous couple wave theory to obtain the limit of the effective optical thickness for each composition of photopolymer. The optimal composition to obtain high stored capacity, high index modulation, good energetic sensitivity, high dynamic range and low noise are found.
Sponsor: This work was supported by the “Oficina de Ciencia y Tecnología” (Generalitat Valenciana, Spain) under projects GV01-130 GV04A/574 and GV04A/565.
URI: http://hdl.handle.net/10045/9367
ISBN: 978-0-81945-812-4
ISSN: 0277-786X
DOI: 10.1117/12.605070
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 2005 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, vol. 5827, 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
Appears in Collections:INV - GHPO - Artículos de Revistas

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