Abstract:Significant acceleration of a photorefractive response has been obtained in a thin and long Bi12TiO20 waveguide-like crystals using the nonlinear self-channeling of a laser beam. Total internal reflections of strong fanning beams and their coupling with the pump beam result in the light intensity redistribution inside the crystal and in the generation ofthe photorefractive surface wave of high intensity, which speeds up the photorefractive response by enhancing both the beam intensity and the interaction lengt… Show more
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