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Proceedings Paper

Degenerate four-wave mixing of optical vortices assisted by self-phase and cross-phase modulation
Author(s): G. Maleshkov; P. Hansinger; I. L. Garanovich; D. Skryabin; D. N. Neshev; A. Dreischuh; G. G. Paulus
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Paper Abstract

We study theoretically the non-phase-matched degenerate four-wave mixing of type ωs = 2ω1 ωω2 , involving beams carrying two-dimensional spatial phase dislocations in the form of singly-charged optical vortices (OVs). Accompanying third-order nonlinear processes in the non-resonant nonlinear medium (NLM), which are accounted for, are self- and cross-phase modulation. In the case of pump OV beams with identical topological charges the model predicts the generation of signal beams carrying OVs of the same charge. If the pump beams carry OVs with opposite charges, the generated signals are predicted to carry triply charged vortices which, in the case of a nonnegligible initial free-space propagation from the plane of vortex generation to the NLM, decay inside the NLM into three singly-charged vortices with highly overlapping cores.

Paper Details

Date Published: 17 January 2011
PDF: 7 pages
Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77471E (17 January 2011); doi: 10.1117/12.881860
Show Author Affiliations
G. Maleshkov, Sofia Univ. (Bulgaria)
P. Hansinger, Friedrich-Schiller-Univ. (Germany)
I. L. Garanovich, Australian National Univ. (Australia)
D. Skryabin, Univ. of Bath (United Kingdom)
D. N. Neshev, Australian National Univ. (Australia)
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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