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15 September 2005 Operation of liquid-crystal displays for optical computing
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We review the operation of both twisted and parallel-aligned nematic liquid-crystal displays (LCD's) for applications in optical computing, image processing, pattern recognition and diffractive optical elements. For these applications, three spatial modulation characteristics are of interest: phase-only, amplitude-only, and combined full amplitude and phase. We review how to achieve these three operating conditions. We begin with a discussion of the Jones matrix model for the twisted-nematic LCD displays. We examine optical configurations for achieving amplitude-only modulation and polarization eigenvectors for achieving phase-only modulation. Then we review an extremely successful technique for obtaining combined full amplitude and phase modulation with a single LCD by spatially modulating the maximum phase depth. Finally we discuss new advances in achieving 2D polarization modulation.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. A. Davis, I. Moreno, M. J. Yzuel, J. Campos, A. Marquez, and J. Nicolas "Operation of liquid-crystal displays for optical computing", Proc. SPIE 5907, Photonic Devices and Algorithms for Computing VII, 590701 (15 September 2005);

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