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Three-dimensional spinning solitons in the cubic-quintic nonlinear medium
D Mihalache1, D Mazilu, L C Crasovan
1Institute of Solid State Theory and Theoretical Optics, Friedrich-Schiller University Jena, Max-Wien-Platz 1, D-07743, Jena, Germany.
Summary
We discovered spinning light bullets in nonlinear media. While they can become unstable, they may appear stable in experiments due to slow decay.
Area of Science:
- Nonlinear optics
- Optical physics
- Soliton dynamics
Background:
- Spatiotemporal solitons are localized light waves.
- Vortex solitons possess orbital angular momentum.
- Cubic-quintic nonlinear media support complex soliton structures.
Purpose of the Study:
- To investigate the existence and stability of three-dimensional bright vortex solitons.
- To explore the dynamics of spinning solitons in bulk nonlinear media.
Main Methods:
- Numerical simulations of nonlinear wave propagation.
- Analysis of one-parameter families of solitons.
- Investigation of symmetry-breaking instabilities.
Main Results:
- Found one-parameter families of three-dimensional spatiotemporal bright vortex solitons.
- Observed symmetry-breaking azimuthal instability leading to soliton breakup.
- Identified conditions where spinning solitons exhibit quasi-stable behavior.
Conclusions:
- Spinning bright vortex solitons are susceptible to azimuthal instability.
- The instability's slow development allows for quasi-stable observation in experiments.
- This research contributes to understanding complex light structures in nonlinear media.