Eur. Phys. J. Special Topics 173, 245-254 (2009)
https://doi.org/10.1140/epjst/e2009-01077-7

Collisions between spinning and nonspinning co-axial three-dimensional Ginzburg-Landau solitons

¹ Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), 407 Atomistilor, 077125 Magurele-Bucharest, Romania
² Institute of Solid State Theory and Theoretical Optics, Friedrich-Schiller Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
³ Laboratoire POMA, CNRS FRE 2988, Université d'Angers, 2 Bd. Lavoisier, 49045 Angers Cedex 01, France
⁴ Department of Physical Electronics, Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel

Corresponding author: Dumitru.Mihalache@nipne.ro

Abstract

We report results of the first analysis of collisions between stable fundamental (alias spinless) and vortical (spinning) three-dimensional dissipative solitons in a model of a laser cavity. The systematic analysis is carried out for values S=1 and S=2 of the vorticity of the latter soliton. With the increase of the collision momentum, χ, the same generic scenarios are observed in either case: merger into a single fundamental soliton at both small and relatively large values of χ, and the formation of two fundamental solitons in an intermediate interval of variation of the collision momentum χ. At very large values of χ, the collision seems quasi-elastic, but the vortex soliton eventually splits into two nonspinning fragments.