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Photorefractive solitons embedded in gratings in centrosymmetric crystals (Articolo in rivista)

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Photorefractive solitons embedded in gratings in centrosymmetric crystals (Articolo in rivista) (literal)

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Ciattoni, A; Rizza, C; DelRe, E; Palange, E (2006)
Photorefractive solitons embedded in gratings in centrosymmetric crystals
in Optics letters
(literal)

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Univ Aquila, Dipartimento Fis, CNR, CASTI Reg Lab, I-67010 Laquila, Italy; Univ Aquila, Opt & Photon Lab, Dipartimento Ingn Elettr, I-67040 Laquila, Italy; CNR, I-00185 Rome, Italy (literal)

Titolo

Photorefractive solitons embedded in gratings in centrosymmetric crystals (literal)

Abstract

We investigate (1 + 1D) spatial optical solitons embedded in a fixed-volume grating in centrosymmetric photorefractive crystals. We numerically identify a two-parameter soliton family and deduce both its existence surface and soliton profiles. For shallow gratings, the soliton Fourier spectrum exhibits three lobes located at the reciprocal lattice points -K, 0, and K. Soliton trapping is a consequence of both the self-induced nonlinear waveguide and the grating reflectivity, which prevents the breakaway of the lateral components. To provide a preliminary evaluation of soliton stability, we also investigate the propagation of slightly perturbed soliton profiles. (c) 2006 Optical Society of America (literal)

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