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Generation of second-harmonic conical waves via nonlinear Bragg diffraction

Saltiel, Solomon; Neshev, Dragomir; Fischer, Robert; Arie, Ady; Krolikowski, Wieslaw; Kivshar, Yuri


We report on the observation of second-harmonic conical waves generated in a novel geometry of the transverse excitation of an annular periodically poled nonlinear photonic structure by a fundamental Gaussian beam. We show that the conical beams are formed as a result of the higher-order nonlinear Bragg diffraction involving two parametric processes in which an ordinary fundamental wave is converted simultaneously into ordinary and extraordinary polarized second harmonics.

CollectionsANU Research Publications
Date published: 2008-03-12
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.100.103902


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