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Nonlinear diffraction from a virtual beam

Saltiel, Solomon; Neshev, Dragomir; Krolikowski, Wieslaw; Voloch-Bloch, Noa; Arie, Ady; Bang, Ole; Kivshar, Yuri

Description

We observe experimentally a novel type of nonlinear diffraction in the process of two-wave mixing on a nonlinear quadratic grating. We demonstrate that when the nonlinear grating is illuminated simultaneously by two noncollinear beams, a second-harmonic diffraction pattern is generated by a virtual beam propagating along the bisector of the two pump beams. The observed diffraction phenomena is a purely nonlinear effect that has no analogue in linear diffraction.

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/54432
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.104.083902

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