Nonuniformly Filled Vortex Rings in Nonlinear Optics

• Published in: JETP letters Vol. 117; no. 8; pp. 583 - 587
• Main Author: Ruban, V. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-04-2023; Springer Nature B.V
• Subjects: Atomic; Biological and Medical Physics; Biophysics; Defocusing; Domain walls; Group velocity; Molecular; Nonlinear optics; Optical and Plasma Physics; Optics and Laser Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Plane waves; Quantum Information Technology; Schrodinger equation; Solid State Physics; Solitary waves; Spintronics; Surface stability; Surface tension; Vortex rings
• ISSN: 0021-3640; 1090-6487
• DOI: 10.1134/S0021364023600817

A new type of long-lived solitary structures for paraxial optics with two circular polarizations of light in a homogeneous defocusing Kerr medium with an anomalous group velocity dispersion has been revealed numerically in the coupled nonlinear Schrödinger equations. A found hybrid three-dimensional soliton is a vortex ring against the background of a plane wave in one of the components, and the core of the vortex is filled with another component nonuniformly in azimuth angle. The existence of such quasistationary structures with a reduced symmetry in a certain parametric region is due to the saturation of the so-called sausage instability caused by the effective surface tension of a domain wall between two polarizations.