Observation nonlinearity-induced symmetry breaking in a photorefractive waveguide lattice

Cibo Lou; Cibo Lou; Cibo Lou; Liqin Tang; Liqin Tang; Liqin Tang; Jingjun Xu; Jingjun Xu; Jingjun Xu; P.G. Kevrekidis; Zhigang Chen; Zhigang Chen; Zhigang Chen; Zhigang Chen

doi:10.1364/PEMD.2005.535

Photorefractive Effects, Materials, and Devices
OSA Trends in Optics and Photonics (Optica Publishing Group, 2005),
paper 535
•https://doi.org/10.1364/PEMD.2005.535

Observation nonlinearity-induced symmetry breaking in a photorefractive waveguide lattice

Cibo Lou, Liqin Tang, Jingjun Xu, P.G. Kevrekidis, and Zhigang Chen

Photorefractive Effects, Materials, and Devices 2005

Sanya, Hainan China
ISBN: 1-55752-793-8

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Solitons and Optical Lattices (SOL)

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C. Lou, L. Tang, J. Xu, P. G. Kevrekidis, and Z. Chen, "Observation nonlinearity-induced symmetry breaking in a photorefractive waveguide lattice," in Photorefractive Effects, Materials, and Devices, G. Zhang, D. Kip, D. Nolte, and J. Xu, eds., Vol. 99 of OSA Trends in Optics and Photonics (Optica Publishing Group, 2005), paper 535.

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Abstract

we provide a clear experimental demonstration of spontaneous symmetry breaking in a symmetric double-well potential embedded in an optically induced photonic lattice in a photorefractive crystal. The symmetric ground state becomes asymmetric as the strength of the nonlinearity experienced by the probe beam exceeds a threshold value, while no such symmetry breaking occurs should the probe beam itself experience a null or very weak nonlinearity.

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