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Generation of Second-Harmonic Bessel Beams by Transverse Phase-Matching in Annular Periodically Poled Structures

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

Description

We demonstrate experimentally the generation of second-harmonic conical waves via parametric frequency doubling in a two-dimensional annular periodically poled nonlinear photonic structure fabricated in a stoichiometric lithium tantalate crystal. We apply the concept of nonlinear Bragg diffraction for explaining this effect, and show theoretically that in low-symmetry crystals this process results in generated second-harmonic waves being a superposition of the Bessel beams.

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/33866
Source: Japanese Journal of Applied Physics
DOI: 10.1143/JJAP.47.6777

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