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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campilo
  • Vol. 32, Iss. 17 — Sep. 1, 2007
  • pp: 2511–2513

Accurate control of a liquid-crystal display to produce a homogenized Fourier transform for holographic memories

Andrés Márquez, Sergi Gallego, David Méndez, Mariela L. Álvarez, Elena Fernández, Manuel Ortuño, Cristian Neipp, Augusto Beléndez, and Inmaculada Pascual  »View Author Affiliations


Optics Letters, Vol. 32, Issue 17, pp. 2511-2513 (2007)
http://dx.doi.org/10.1364/OL.32.002511


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Abstract

We show an accurate procedure to obtain a Fourier transform (FT) with no dc term using a commercial twisted-nematic liquid-crystal display. We focus on the application to holographic storage of binary data pages, where a drastic decrease of the dc term in the FT is highly desirable. Two different codification schemes are considered: binary π radians phase modulation and hybrid ternary modulation. Any deviation in the values of the amplitude and phase shift generates the appearance of a strong dc term. Experimental results confirm that the calculated configurations provide a FT with no dc term, thus showing the effectiveness of the proposal.

© 2007 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(070.2590) Fourier optics and signal processing : ABCD transforms
(210.2860) Optical data storage : Holographic and volume memories
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Devices

History
Original Manuscript: June 5, 2007
Manuscript Accepted: July 11, 2007
Published: August 17, 2007

Citation
Andrés Márquez, Sergi Gallego, David Méndez, Mariela L. Álvarez, Elena Fernández, Manuel Ortuño, Cristian Neipp, Augusto Beléndez, and Inmaculada Pascual, "Accurate control of a liquid-crystal display to produce a homogenized Fourier transform for holographic memories," Opt. Lett. 32, 2511-2513 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-17-2511

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