15 September 2005 Operation of liquid-crystal displays for optical computing
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Abstract
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.
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J. A. Davis, J. A. Davis, I. Moreno, I. Moreno, M. J. Yzuel, M. J. Yzuel, J. Campos, J. Campos, A. Marquez, A. Marquez, J. Nicolas, J. Nicolas, } "Operation of liquid-crystal displays for optical computing", Proc. SPIE 5907, Photonic Devices and Algorithms for Computing VII, 590701 (15 September 2005); doi: 10.1117/12.617650; https://doi.org/10.1117/12.617650
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