Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2007 Sep 1;32(17):2511-3.

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

Author information

Departamento de Física, Ingenierýa de Sistemas y Teoría de la Señal, Universidad de Alicante, Apartado 99, 03080, Alicante, Spain.


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 pi 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.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center