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Opt Express. 2007 Apr 16;15(8):5248-59.

Spatial solitons in nematic liquid crystals: from bulk to discrete.

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NOOEL - Nonlinear Optics and OptoElectronics Laboratory, Department of Electronic Engineering, INFN - CNISM - University Roma Tre", Via della Vasca Navale 84, 00146 Rome, Italy.


We review theoretical and experimental results on spatial solitons in nematic liquid crystalline cells, including two-dimensional solitons in bulk and discrete solitons in one-dimensional waveguide arrays. In bulk we describe the propagation of continuous solitons in the presence of adjustable walk-off, their interaction with light-induced defects and refraction-reflection at a voltage-tunable interface. In optical lattices we address the transition from discrete diffraction to localization, as well as all-optical beam steering.


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