Physical and effective optical thickness of holographic diffraction gratings recorded in photopolymers

Title: Physical and effective optical thickness of holographic diffraction gratings recorded in photopolymers
Authors: Gallego, Sergi
Ortuño, M.
Neipp, Cristian
Márquez, A.
Beléndez, A.
Pascual, I.
Kelly, John V.
Sheridan, John T.
Permanent link: http://hdl.handle.net/10197/3476
Date: 21-Mar-2005
Abstract: In recent years the interest in thick holographic recording materials for storage applications has increased. In particular, photopolymers are interesting materials for obtaining inexpensive thick dry layers with low noise and high diffraction efficiencies. Nonetheless, as will be demonstrated in this work, the attenuation in depth of light during the recording limits dramatically the effective optical thickness of the material. This effect must be taken into account whenever thick diffraction gratings are recorded in photopolymer materials. In this work the differences between optical and physical thickness are analyzed, applying a method based on the Rigorous Coupled Wave Theory and taking into account the attenuation in depth of the refractive index profile. By doing this the maximum optical thickness that can be achieved can be calculated. When the effective thickness is known, then the real storage capacity of the material can be obtained.
Funding Details: Other funder
Type of material: Journal Article
Publisher: Optical Society of America
Copyright (published version): 2005 Optical Society of America
Keywords: Holography;Holographic recording materials;Volume holographic gratings
Subject LCSH: Holographic storage devices (Computer science)
Diffraction gratings
Photopolymers
DOI: 10.1364/OPEX.13.001939
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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