Surface defect lattice solitons in photovoltaic-photorefractive crystals

Wang, Chunxiang; Lu, Keqing; Chen, Weijun; Hu, Kai

doi:10.1016/j.optcom.2014.09.015

Cited by 6 publications

(1 citation statement)

References 36 publications

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“…DMs have been studied before in photonic lattices of non-centrosymmetric photorefractive (PR) crystals [19][20][21][22], where the change in refractive index is driven by the linear electro-optic effect (Pockels effect). DSs in one-dimensional (1D) photonic lattices [23][24][25], 2D square photonic lattices [9], triangular photonic lattices [26], and kagome photonic lattices [27,28] have also been proposed. In centrosymmetric PR crystals, 1D and 2D spatial solitons have been comprehensively investigated by Delre et al [1,29].…”

Section: Introductionmentioning

confidence: 99%

Defect solitons supported by two-dimensional lattice potentials in biased centrosymmetric photorefractive crystals with saturable self-focusing nonlinearity

Feng¹,

Qin²,

Wang³

et al. 2020

Laser Phys.

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We investigate the defect solitons (DSs) in square photonic lattices in biased centrosymmetric photorefractive crystals with saturable self-fousing nonlinearity. We reveal the existence and stable regions of DSs due to the changing defect strength; in particular, DSs appear to be unstable in the first bandgap with high power where the repulsive defect is, which is usually stable in non-centrosymmetric media. The DSs existence and stable regions reduce with the increase of the attractive defect strength in the semi-infinite bandgap. For a repulsive defect, DSs can be profoundly affected by their defect potentials and power.

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