Abstract

The rotational properties of angularly accelerating breathers are analytically discussed in nonlocal nonlinear media. The breather comprises of a Gaussian envelope and the nested vortices with any number of topological charges. Based on the analytical solution obtained by an approach of two-dimensional fractional Fourier transform, the breather is predicted to exhibit an interesting rotation. The vortex revolves around the core of the Gaussian envelope when spinning simultaneously around its own axis. And both rotating velocities closely depend on the optical power. An optical power induced acceleration enhancement is also found, and can be explained in an analogy with the rotation of rigid bodies.

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