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WFD-3 Photorefractive imaging with periodically poled lithium niobate

Serguey Odoulov
Institute of Physics, National Academy of Sciences,03650 Kiev-39, Ukraine


    Iron doped periodically poled lithium niobate features good photorefractive response at
    high spatial frequencies while its responce at low spatial frequencies is strongly reduced.
    This ensures high efficient recording of 3D holograms in the bulk crystals with virtually
    no optical damage from the unfocuced laser beams. Our recent studies showed that
    apart from suppression of optical damage PPLN has at least one more advantage which
    is important for storage and reconstruction of high quality images: the intermodulation
    noise in hologram recording is strongly reduced, too. The compareson of single and
    multiple hologram recording in PPLN and in homogeneously poled crystal of the same
    composition will be presented.









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