Paper A31

Dynamics of ring dark solitary waves in saturable self-defocusing media

E. D. Eugenieva, A. Dreischuh


The dynamics of ring dark solitary waves propagating in saturable self-defocusing media is studied numerically. The results show that the saturation leads to a reduction of the ring's transverse velocity when compared to this in Kerr media. At high saturation levels, however, in a formal contradiction but in actual agreement to the one-dimensional case, a strong snake-type instability and creation of optical vortices of alternate topological charges are to be expected.