Accurate control of a liquid-crystal display to produce a homogenized Fourier transform for holographic memories.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Optics letters
دوره 32 17 شماره
صفحات -
تاریخ انتشار 2007