Diffraction managed vortex soliton in competing cubic-quintic nonlinear media

被引：2
|
作者：
Jiang, Yumin [1 ]
Ge, Lijuan [2 ]
Shen, Ming [1 ]
机构：
[1] Shanghai Univ, Inst Quantum Sci & Technol, Dept Phys, Shanghai 200444, Peoples R China
[2] Suzhou Univ Sci & Technol, Sch Math & Phys, Suzhou 215009, Peoples R China
来源：
OPTICS EXPRESS | 2024年 / 32卷 / 24期
基金：
中国国家自然科学基金;
关键词：
OPTICAL SOLITONS; INSTABILITY; INDEX; BEAMS;
D O I：
10.1364/OE.542970
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study analytically and numerically vortex solitons in competing cubic-quintic nonlinear media with normal and anomalous fourth order diffraction (FOD). Bifurcated solutions of vortex solitons are obtained with variational (Lagrangian) approach. Propagation dynamics are demonstrated with split-step Fourier transform, which show that normal (anomalous) FOD can weaken (enhance) the stable propagation distance of vortex solitons. Furthermore, stability of vortex solitons is determined by Vakhitov-Kolokolov (VK) criteria. The upper branch of vortex solitons is unstable, whereas, the lower branch of vortex solitons is robust against perturbations. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码：43195 / 43204
页数：10
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