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Influence of four-wave mixing and walk-off on the self-focusing of coupled waves

Bergé, L; Bang, Ole; Krolikowski, Wieslaw


Four-wave mixing and walk-off between two optical beams are investigated for focusing Kerr media. It is shown that four-wave mixing reinforces the self-focusing of mutually trapped waves by lowering their power threshold for collapse, only when their phase mismatch is small. On the contrary, walk-off inhibits the collapse by detrapping the beams, whose partial centroids experience nonlinear oscillations.

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.84.3302


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