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arXiv · 0812.3439

Stable higher-charge discrete vortices in hexagonal optical lattices

Kody J. H. Law·P. G. Kevrekidis·Tristram J. Alexander·Wieslaw Krolikowski·Yuri S. Kivshar
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Abstract

We show that double-charge discrete optical vortices may be completely stable in hexagonal photonic lattices where single-charge vortices always exhibit dynamical instabilities. Even when unstable the double-charge vortices typically have a much weaker instability than the single-charge vortices, and thus their breakup occurs at longer propagation distances.

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Kody J. H. Law, P. G. Kevrekidis, Tristram J. Alexander, Wieslaw Krolikowski, Yuri S. Kivshar. 2008-12-18. Stable higher-charge discrete vortices in hexagonal optical lattices. https://doi.org/10.1103/physreva.79.025801

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