, Volume 69, Issue 2, pp 107-111

Quasi-two-dimensional dark spatial solitons and generation of mixed phase dislocations

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Abstract.

This paper presents experimental evidence that orthogonally crossed dark soliton stripes form quasi-two-dimensional spatial solitons with a soliton constant equal to that of singly charged optical vortices. Besides the pairs of oppositely charged optical vortex solitons, the snake instability of the dark formation at moderate saturation is found to lead to generation of steering mixed edge–screw phase dislocations with zero total topological charges.

Received: 26 October 1998 / Revised version: 19 January 1999 / Published online: 12 May 1999