Hologram recording in polyvinyl alcohol/acrylamide photopolymers by means of pulsed laser exposure

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Title: Hologram recording in polyvinyl alcohol/acrylamide photopolymers by means of pulsed laser exposure
Authors: García Llopis, Celia | Pascual, Inmaculada | Costela González, Ángel | García-Moreno Gonzalo, Inmaculada | Gómez Hernández, Clara | Fimia Gil, Antonio | Sastre Muñoz, Roberto
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Instituto de Química-Física "Rocasolano" | Instituto de Ciencia y Tecnología de Polímeros
Keywords: Holography | Holographic recording materials | Optical storage materials | Photopolymers
Knowledge Area: Óptica
Date Created: 27-Aug-2001
Issue Date: 10-May-2002
Publisher: Optical Society of America
Citation: GARCÍA LLOPIS, Celia, et al. “Hologram recording in polyvinyl alcohol/acrylamide photopolymers by means of pulsed laser exposure”. Applied Optics. Vol. 41, No. 14 (May 2002). ISSN 0003-6935, pp. 2613-2620
Abstract: The variation in transmittance produced when a photopolymer is irradiated with a pulsed laser is analyzed and experimental results obtained when diffraction gratings are stored using pulsed exposure are presented. In either case, the influence of the energy of the irradiation pulse, the number of pulses, and the pulse repetition rate were studied. The photopolymer used was an acrylamide/polyvinyl alcohol dry film with a yellow eosin-thiethanol-amine mixture as a photoinitiator system. The recording of the gratings was performed by use of a holographic copying process. The samples were exposed and holograms recorded with a collimated beam from a frequency-doubled Nd:YAG (532 nm) Q-switched laser. Our initial results show that it is possible to obtain diffraction gratings with a diffraction efficiency of 60% and a refractive index modulation up to 2.8 × 10−3. The energetic sensitivities achieved are close to those obtained with the same material and continuous irradiation without a preprocessing of the gratings.
Sponsor: This work was financed by the Comisión Interministerial de Ciencia y Tecnología of Spain (Project MAT 2000-1361-C04-04 and Project MAT 99-0622).
URI: http://hdl.handle.net/10045/9177
ISSN: 0003-6935 (Print) | 1539-4522 (Online)
DOI: 10.1364/AO.41.002613
Language: eng
Type: info:eu-repo/semantics/article
Rights: This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-14-2613. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Peer Review: si
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