An improved procedure for fringe-locked photorefractive running hologram data processing

Ángel Salazar, Héctor Lorduy G, Renata Montenegro, Jaime Frejlich

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    4 Scopus citations

    Abstract

    We report a new improved procedure for experimental data fitting in photorefractive fringe-locked running hologram experiments. From this fitting we compute the diffusion length LD, the Debye screening length l s, and the quantum efficiency for photo-excitation of charge carriers Φ, with a lower degree of uncertainty than reported in previous publications. The procedure was successfully tried on an undoped B 12TiO20 (BTO) crystal and led to LD = 0.16νm, ls = 0.038νm, and Φ = 0.33, in good agreement with the already available information on this sample. The effectively applied electric field coefficient in the experiment was also estimated.

    Original languageEnglish
    Article number045201
    JournalJournal of Optics A: Pure and Applied Optics
    Volume11
    Issue number4
    DOIs
    StatePublished - 2009

    Keywords

    • Diffraction efficiency
    • Fringe-locked holograms
    • Photorefractive materials

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