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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 13 — May. 1, 2007
  • pp: 2443–2452

Nondestructive readout of a photorefractive hologram by phase-conjugate copying in a one-crystal configuration

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

Applied Optics, Vol. 46, Issue 13, pp. 2443-2452 (2007)

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We propose a novel phase-conjugate copying method for nondestructive readout of a volatile photorefractive hologram. In the one-crystal configuration, two holographic memories and a mutually pumped phase conjugator (MPPC) are formed within a single photorefractive crystal, instead of using multiple crystals. Two memories share the same hologram and complement each other in refreshing the hologram. A MPPC suppresses fanning noise and automatically aligns the wavefront of the reference and readout beams. We found the optimum configuration to achieve nondestructive readout from calculations and geometric consideration. In the experiments with a BaTiO 3 crystal, a continuous readout of 20 times longer than the recording time was achieved.

© 2007 Optical Society of America

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

ToC Category:
Optical Data Storage

Original Manuscript: July 7, 2006
Revised Manuscript: November 20, 2006
Manuscript Accepted: December 15, 2006
Published: April 9, 2007

Terumasa Ito, Atsushi Okamoto, Hisatoshi Funakoshi, and Kunihiro Sato, "Nondestructive readout of a photorefractive hologram by phase-conjugate copying in a one-crystal configuration," Appl. Opt. 46, 2443-2452 (2007)

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