Paper A19

Interactions of vortex solitons superimposed on different background beams

I. Velchev, A. Dreischuh, D. Neshev, S. Dinev


The interaction between two optical vortex solitons (OVS), formed on different background beams is analyzed numerically. Analogous to the one-dimensional case, vector OVS seem obtainable (see Yu. Kivshar and S. Turitsyn, Opt. Lett. 18 (1993) 586). The relative topological charges of the interacting (off-axis) vortices are found to rule their propagation characteristics. Attraction is found in the case of equal charges, in contrast to the opposite case, where repulsion is present.