Implementation of a photorefractive Talbot correlator

J. E. Rueda, M. Lasprilla, A. Salazar

    Research output: Contribution to journalConference articlepeer-review


    In this work, the results of the implementation of an optic correlator are presented. The optic correlator allows detecting, on the exit plane, the address of rotation of the objective. The correlation filter is the hologram of the self-image of the reference object, which is materialized in a BSO crystal. During the operation of the correlator, the exit plane exhibits harmonic space 20. On the other hand, while the objective changes its angular position, the harmonic of order zero and the harmonic +1 or -1 exchange energy, as it is the address of rotation of the objective.

    Original languageEnglish
    Article number194
    Pages (from-to)1019-1023
    Number of pages5
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Issue numberPART 2
    StatePublished - 2004
    EventRIAO/OPTILAS 2004: 5th Iberoamerican Meeting on Optics, and 8th Latin American Meeting on Optics, Lasers, and their Applications; ICO Regional Meeting - Porlamar, Venezuela, Bolivarian Republic of
    Duration: 3 Oct 20048 Oct 2004


    • Pattern recognition
    • Photorefractive effect
    • Talbot effect


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