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Observation of light localization in modulated Bessel optical lattices
R. Fischer, D. N. Neshev, S. Lopez-Aguayo, A. S. Desyatnikov, A. A. Sukhorukov, W. Krolikowski, and Yu. S. Kivshar,
Opt. Express 14, 2825-2830 (2006).
[Full-text PDF (464 Kb)]
[Online]
Abstract: We generate higher-order azimuthally modulated Bessel optical lattices in photorefractive crystals by employing a phase-imprinting technique. We report on the experimental observation of self-trapping and nonlinear localization of light in such segmented lattices in the form of ring-shaped and single-site states. The experimental results agree well with numerical simulations accounting for an anisotropic and spatially nonlocal nonlinear response of photorefractive crystals.
Keywords: nonlinear photonic lattices; self-focusing media; nondiffracting beams; diffraction; generation; solitons
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