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Proceedings Paper

Fractional vortex dipoles of edge-screw type in self-focusing Kerr nonlinear media
Author(s): G. Maleshkov; P. Hansinger; A. Dreischuh; G. G. Paulus
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Paper Abstract

In this work we study the evolution of dark beams of finite length carrying edge-screw phase dislocations in selffocusing Kerr nonlinear media aiming to find appropriate conditions to control the process of filamentation of the background beam. In the case of a single fractional vortex dipole, geometry-controlled conditions for changing the intensity ratio of the peaks and their offset are found. Depending on their orientation, two parallel or two in-line mixed phase dislocations carried by a common background beam are predicted to perturb it and to initiate filamentation of different number of peaks with different spatial distributions.

Paper Details

Date Published: 18 January 2011
PDF: 8 pages
Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77471P (18 January 2011); doi: 10.1117/12.881862
Show Author Affiliations
G. Maleshkov, Sofia Univ. (Bulgaria)
P. Hansinger, Friedrich-Schiller-Univ. (Germany)
A. Dreischuh, Sofia Univ. (Bulgaria)
G. G. Paulus, Friedrich-Schiller-Univ. (Germany)

Published in SPIE Proceedings Vol. 7747:
16th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Dimitar Slavov, Editor(s)

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