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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 35 — Dec. 10, 2003
  • pp: 7008–7012

Holographic characteristics of a 1-mm-thick photopolymer to be used in holographic memories

Manuel Ortuño, Sergi Gallego, Celia García, Cristian Neipp, and Inmaculada Pascual  »View Author Affiliations


Applied Optics, Vol. 42, Issue 35, pp. 7008-7012 (2003)
http://dx.doi.org/10.1364/AO.42.007008


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Abstract

Poly(vinyl alcohol-acrylamide) photopolymers are materials of interest in the field of digital information storage (holographic memories). We analyzed the behavior of a 1-mm-thick photopolymer. Using a standard holographic setup, we recorded unslanted diffraction gratings. The material has high angular selectivity (0.4°), good sensitivity (88 mJ/cm2), and small losses caused by absorption and scattering of light. It also has a high maximum diffraction efficiency (70%). A significant induction period was seen in the material. The authors hypothesize that, during most of this induction period, polymerization does in fact take place but is not reflected in the appearance of the diffracted light until a certain threshold value of exposure is reached.

© 2003 Optical Society of America

OCIS Codes
(090.2900) Holography : Optical storage materials
(090.4220) Holography : Multiplex holography
(090.7330) Holography : Volume gratings

Citation
Manuel Ortuño, Sergi Gallego, Celia García, Cristian Neipp, and Inmaculada Pascual, "Holographic Characteristics of a 1-mm-Thick Photopolymer to be Used in Holographic Memories," Appl. Opt. 42, 7008-7012 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-35-7008

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