Apparatus performs correlation between input image and reference image in real time by means of degenerate four-wave mixing in photorefractive crystal, which serves as real-time holographic medium. Gallium arsenide chosen to be photorefractive material in this application because at frame rate and level of illumination used in experiments, offers adequate diffraction efficiency. Frame rates as high as 1,000 s to negative 1st power achievable.


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    Title :

    Real-Time Optical Correlator Based On GaAs


    Contributors:

    Published in:

    Publication date :

    1992-04-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





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