Nonlinear Aharonov-Bohm scattering by optical vortices

被引：29

作者：

Neshev, D ^{[1
]}

Nepomnyashchy, A

Kivshar, YS

机构：

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

[2] Technion Israel Inst Technol, Dept Math, IL-32000 Haifa, Israel

[3] Technion Israel Inst Technol, Minerva Ctr Nonlinear Phys Complex Syst, IL-32000 Haifa, Israel

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.87.043901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study linear and nonlinear wave scattering by an optical vortex in a self-defocusing nonlinear Kerr medium. In the linear case, we find a splitting of a plane-wave front at the vortex proportional to its circulation, similar to what occurs in the scattered wave of electrons for the Aharonov-Bohm effect. For larger wave amplitudes, we study analytically and numerically the scattering of a dark-soliton stripe (a nonlinear analog of a small-amplitude wave packet) by a vortex and observe a significant asymmetry of the scattered wave. Subsequently, a wave-front splitting of the scattered wave develops into transverse modulational instability "unzipping" the stripe into trains of vortices with opposite charges.

引用

页码：43901 / 1

页数：4

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