S. Baluschev, A. Dreischuh, I. Velchev, S. Dinev, O. Marazov
Abstract.
The formation of two-dimensional (2D) odd dark spatial solitons is analyzed numerically at an initial helical dark-beam phase distribution. Experimental results are presented for the first time confirming the existence of two-dimensional optical even dark solutions (ring dark solitons). Several aspects of the evolution of input 1D and 2D odd/even dark beams are compared qualitatively.