Bragg diffraction-limited photorefractive crystal-based correlators

Francis T. Yu, Shizhuo Yin

    Research output: Contribution to journalArticlepeer-review

    23 Scopus citations


    Although thick volume photorefractive (PR) crystal offers promise in application to large-storage-capacity holographic memories, the thickness of the material also impairs the shift-invariant properties of the correlator. We discuss the influence of the angular and the wavelength selectivity in a thick PR crystal filter. The shift tolerances of Bragg diffraction-limited PR-based correlators are analyzed, which include the Vander Lugt, joint transform, and reflection-type (RC) correlators. We have shown that the RC correlator performs the best. A simple experiment to illustrate the shift-invariant capability of PR-based reflection-type correlators is also described.

    Original languageEnglish (US)
    Pages (from-to)2224-2231
    Number of pages8
    JournalOptical Engineering
    Issue number8
    StatePublished - Jan 1 1995

    All Science Journal Classification (ASJC) codes

    • Atomic and Molecular Physics, and Optics
    • Engineering(all)


    Dive into the research topics of 'Bragg diffraction-limited photorefractive crystal-based correlators'. Together they form a unique fingerprint.

    Cite this