Higher-charged vortex solitons in harmonic potential

Dongshuai Liu, Yanxia Gao, Dianyuan Fan and Lifu Zhang

Chaos, Solitons & Fractals, 2023, vol. 171, issue C

Abstract: By introducing external harmonic potential confinement, we investigate the stability of higher-charged vortex solitons in competing cubic–quintic nonlinear medium. Vortex solitons with higher charges (m > 5) become robust in harmonic potential. There are two coexisting branches of different power at the same propagation constant domain. Intriguingly, if topological charge m > 1, we find the inferior branch of solitons is completely unstable, while the superior branch of solitons still exists interval of stability with the enhancement of competing nonlinearity. From the perspective of the numerical results, it reveals a novel approach to access optical vortex mode with higher topological charge.

Keywords: Vortex solitons; High charges; Competing nonlinearity (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:171:y:2023:i:c:s0960077923003235

DOI: 10.1016/j.chaos.2023.113422

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