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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 23 — Aug. 10, 2007
  • pp: 5902–5911

Recording schedule for partially coherent hologram multiplexing in a photorefractive medium

Terumasa Ito, Atsushi Okamoto, and Kunihiro Sato  »View Author Affiliations


Applied Optics, Vol. 46, Issue 23, pp. 5902-5911 (2007)
http://dx.doi.org/10.1364/AO.46.005902


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Abstract

The exposure schedule for partially coherent hologram multiplexing, in which data pages are multiplexed by multiple signal beams and a single reference beam, is investigated in detail for the case of a π / 2 phase-shifted photorefractive medium. We found that the optimum recording schedule for partially coherent multiplexing cannot be determined by the classical recording schedule theory because of time-constant errors induced by partially coherent interaction between a reference beam and self-diffraction signal beams. To overcome the issue, we derive a modified recursion equation that accounts for the time-constant errors, and we also propose a novel iterative recording-schedule correction algorism for finding the optimum solution. In the calculation with hologram multiplicity of 30 and photorefractive coupling strength of 3.0, we could successfully obtain a flat diffraction-efficiency profile after the second recursion.

© 2007 Optical Society of America

OCIS Codes
(090.4220) Holography : Multiplex holography
(190.5330) Nonlinear optics : Photorefractive optics
(210.2860) Optical data storage : Holographic and volume memories

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 29, 2007
Revised Manuscript: April 16, 2007
Manuscript Accepted: May 30, 2007
Published: August 9, 2007

Citation
Terumasa Ito, Atsushi Okamoto, and Kunihiro Sato, "Recording schedule for partially coherent hologram multiplexing in a photorefractive medium," Appl. Opt. 46, 5902-5911 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-23-5902

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