Diffraction managements of focused light beams in optical lattices with a quadratic frequency modulation
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We reveal that the effective diffraction experienced by light beams launched along the central guiding channel of optical lattice with a quadratic frequency modulation can be tuned in strength and sign. Complete suppression of the linear diffraction in the broad band of spatial frequencies is shown to be possible, thus profoundly affecting properties of nonlinear self-sustained beams as well. In particular, we report on the properties of a new class of stable solitons supported by such lattices in defocusing media.
CitationKartashov, Y.V., Torner, L., Vysloukh, V.A. Diffraction managements of focused light beams in optical lattices with a quadratic frequency modulation. "Optics express", Maig 2005, vol. 13, núm. 11, p. 4244-4249.