Effects of Amplitude and Phase Mismatching Errors in the Generation of a Kinoform for Pattern Recognition.

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  • Moreno Ignacio
    Departamento de Física, Universidad Autónoma de Barcelona, 08193 Bellaterra (Barcelona), Spain
  • Campos Juan
    Departamento de Física, Universidad Autónoma de Barcelona, 08193 Bellaterra (Barcelona), Spain
  • Gorecki Christophe
    Laboratoire d"Optique P. M. Duffieux, Université de Franche–Comté, 25030 Besancon Cedex, France
  • Yzuel María J.
    Departamento de Física, Universidad Autónoma de Barcelona, 08193 Bellaterra (Barcelona), Spain

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Description

A model to determine the influence of the phase and amplitude mismatching on the diffraction orders is proposed. The coupling between amplitude and phase in liquid crystal televisions (LCTV) is also considered. The effect on the impulse response of the nonlinearities is studied from experimentally determined amplitude and phase modulations. It is shown that even with these nonlinearities one of the orders corresponds to the impulse response of the kinoform. The proper diffractional order may be separated by adding phase codes. Experimental results of impulse responses and correlations are given for different configurations of the spatial light modulator (SLM).

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