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Phys. Rev. A 80, 053828 (2009) [5 pages]

Nonlinear beam steering by fractional vortex dipoles

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Georgi Maleshkov1, Dragomir N. Neshev2, and Alexander Dreischuh1,2
1Department of Quantum Electronics, Sofia University, Sofia 1164, Bulgaria
2Nonlinear Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200, Australia

Received 29 April 2009; published 25 November 2009

We study the ability of beams with complex phase dislocations to guide and steer signal beams in self-focusing nonlinear media. In particular, we report on the experimental demonstration of signal deflection by beams carrying step-screw phase dislocation in the form of a fractional vortex dipole. We show how the beam deflection can be ruled by the geometry and orientation of the dipole.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.053828
DOI:
10.1103/PhysRevA.80.053828
PACS:
42.65.Tg, 42.65.Wi, 42.65.Jx
 
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