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Stable higher-charge discrete vortices in hexagonal optical lattices
Kody J. H. Law, P. G. Kevrekidis, Tristram J. Alexander +2
We show that double-charge discrete optical vortices may be completely stable in hexagonal photonic lattices where single-charge vortices always exhibit dynamical instabilities. Ev…
Beam oscillations and curling in chirped periodic structures with metamaterials
A. R. Davoyan, A. A. Sukhorukov, I. V. Shadrivov +1
We study the propagation of electromagnetic waves in one-dimensional chirped periodic structures composed of alternating layers of negative-index (or left-handed) metamaterial and…
Nonlinear plasmonic slot waveguides
A. R. Davoyan, I. V. Shadrivov, Yu. S. Kivshar
We study nonlinear modes in subwavelength slot waveguides created by a nonlinear dielectric slab sandwiched between two metals. We present the dispersion diagrams of the families o…
Goos-Hänchen and Imbert-Fedorov shifts of polarized vortex beams
Konstantin Y. Bliokh, Ilya V. Shadrivov, Yuri S. Kivshar
We study, analytically and numerically, reflection and transmission of an arbitrarily polarized vortex beam on an interface separating two dielectric media and derive general expre…
Cut-wire-pair structures as two-dimensional magnetic metamaterials
David A. Powell, Ilya V. Shadrivov, Yuri S. Kivshar
We study numerically and experimentally magnetic metamaterials based on cut-wire pairs instead of split-ring resonators. The cut-wire pair planar structure is extended in order to…
Spin-Domain Formation in Antiferromagnetic Condensates
Michal Matuszewski, Tristram J. Alexander, Yuri S. Kivshar
Antiferromagnetic condensates are generally believed not to display modulational instability and subsequent spin-domain formation. Here we demonstrate that in he presence of a homo…