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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 4 — Feb. 1, 2010
  • pp: 611–618

Hologram positioning servo for phase-encoded holographic data storage systems

Zoltán Göröcs, Tamás Sarkadi, Gábor Erdei, and Pál Koppa  »View Author Affiliations

Applied Optics, Vol. 49, Issue 4, pp. 611-618 (2010)

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We propose a method using phase encryption and hologram multiplexing to encode positional information into the hologram, which can be used during readout to find the correct position of the reference beam. We also include a method to align the position of the phase code in the reference beam during readout, with which we achieved approximately 1 / 100 hologram size ( 4.4 μm ) precision electronically, without the need of a precise mechanical hologram positioning device. We prove the feasibility of the method with experiments.

© 2010 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(090.4220) Holography : Multiplex holography
(210.2860) Optical data storage : Holographic and volume memories

ToC Category:

Original Manuscript: April 22, 2009
Revised Manuscript: December 22, 2009
Manuscript Accepted: December 28, 2009
Published: January 25, 2010

Zoltán Göröcs, Tamás Sarkadi, Gábor Erdei, and Pál Koppa, "Hologram positioning servo for phase-encoded holographic data storage systems," Appl. Opt. 49, 611-618 (2010)

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