Stable higher-charge discrete vortices in hexagonal optical lattices

被引：44

作者：

Law, Kody J. H. ^{[1
]}

Kevrekidis, P. G. ^{[1
]}

Alexander, Tristram J. ^{[2
,3
]}

Krolikowski, Wieslaw ^{[2
,3
]}

Kivshar, Yuri S. ^{[2
,3
]}

机构：

[1] Univ Massachusetts, Dept Math & Stat, Amherst, MA 01003 USA

[2] Australian Natl Univ, Nonlinear Phys Ctr, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia

[3] Australian Natl Univ, Laser Phys Ctr, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia

来源：

PHYSICAL REVIEW A | 2009年 / 79卷 / 02期

关键词：

optical lattices; optical self-focusing; optical vortices; TRIANGULAR PHOTONIC LATTICES; SOLITONS; STABILITY;

D O I：

10.1103/PhysRevA.79.025801

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页数：4

共 49 条

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