17 January 2011 Fractional vortex dipoles of edge-screw type in self-focusing Kerr nonlinear media
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Proceedings Volume 7747, 16th International School on Quantum Electronics: Laser Physics and Applications; 77471P (2011) https://doi.org/10.1117/12.881862
Event: XVI International School on Quantum Electronics: Laser Physics and Applications, 2010, Nessebar, Bulgaria
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.
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G. Maleshkov, G. Maleshkov, P. Hansinger, P. Hansinger, A. Dreischuh, A. Dreischuh, G. G. Paulus, G. G. Paulus, } "Fractional vortex dipoles of edge-screw type in self-focusing Kerr nonlinear media", Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77471P (17 January 2011); doi: 10.1117/12.881862; https://doi.org/10.1117/12.881862
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