# Quasi-ideal dynamics of vortex solitons embedded in top-hat nonlinear Bessel beams

## TL;DR

This paper demonstrates that vortex solitons embedded in nonlinear Bessel beams in self-defocusing media exhibit quasi-ideal, non-diffracting dynamics that enhance their stability and potential for controlled manipulation in optical applications.

## Contribution

It introduces nonlinear Bessel beams as a natural background for vortex solitons, significantly improving their stability and propagation distance compared to traditional backgrounds.

## Key findings

- Vortex solitons in Bessel beams survive longer than in Gaussian backgrounds.
- The vortex dynamics approach that in an ideal, uniform background.
- Enhanced vortex steering capabilities due to reduced spiraling and decay.

## Abstract

Nonlinear Bessel beams in self-defocusing media are found to be the natural, non-diffracting background where vortex solitons can be nested, interact and survive for propagation distances that are one order of magnitude larger than in the usual Gaussian or super-Gaussian backgrounds. The dynamics of the vortex solitons approaches that in the ideal, uniform background, preventing vortex spiraling and decay, which eases vortex steering for applications.