Symmetric array of off-axis singular beams: spiral beams and their critical points

Izdebskaya, Yana; Shvedov, Vladlen; Volyar, Alexander

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Symmetric array of off-axis singular beams: spiral beams and their critical points

Date

2008-01

Authors

Izdebskaya, Yana

Shvedov, Vladlen

Volyar, Alexander

Publisher

Optical Society of America

Abstract

We consider conditions of structural stability under which the array of singular beams preserves its topological structure and intensity distribution while slightly perturbing its intrinsic parameters. The orbital angular momentum of the array as a function of the array parameters is a characteristic function, and its extreme points correspond to stable and unstable array states.