Two-dimensional vector solitons in a cold atomic gas via electromagnetically induced transparency

被引：4

作者：

Deng, Wen-Wu ^{[1
]}

Chen, Shun-Fang ^{[1
]}

Guo, Ya-Wei ^{[1
]}

Li, Hong ^{[1
]}

Xu, Si-Liu ^{[1
]}

Guo, Qi ^{[2
]}

Belic, Milivoj J. ^{[3
,4
]}

Zhao, Yuan ^{[1
]}

机构：

[1] Hubei Univ Sci & Technol, Sch Elect & Informat Engn, Xianning 437100, Peoples R China

[2] South China Normal Univ, Guangdong Prov Key Lab Nanophoton Funct Mat & Dev, Guangzhou 510631, Guangdong, Peoples R China

[3] Texas A&M Univ Qatar, POB 23874, Doha, Qatar

[4] Inst Phys Belgrade, Pregrevica 118, Zemun 11080, Serbia

来源：

PHYSICS LETTERS A | 2019年 / 383卷 / 24期

关键词：

Vector vortex solitons; Unipolar solitons; Electromagnetically induced transparency; Cold atomic gas; LIGHT LOCALIZATION; VORTEX SOLITONS; WAVES; MEDIA;

D O I：

10.1016/j.physleta.2019.06.011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the formation and propagation of vector vortex solitons (VSs) and unipolar solitons (USs) in a cold coherent atomic gas with a Bessel lattice (BL). The system considered is a gas with a tripod level configuration. Owing to the big enhancement of Kerr nonlinearity contributed by the electromagnetically induced transparency (EIT), a weak vector vortex soliton can be effectively formed with ultraslow propagation velocity. We also demonstrate that the characteristics of two-dimensional VSs and USs can be controlled and manipulated by adjusting the parameters of BL. Results obtained may be useful for designing all-optical switches at low light levels. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：3025 / 3029

页数：5

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