Nonlinear diffraction from a virtual beam

Solomon M. Saltiel, Dragomir N. Neshev, Wieslaw Krolikowski, Noa Voloch-Bloch, Ady Arie, Ole Bang, Yuri S. Kivshar

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Abstract

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 iffraction phenomena is a purely nonlinear effect that has no analogue in linear diffraction
Original languageEnglish
JournalPhysical Review Letters
Volume104
Issue number8
Pages (from-to)083902
ISSN0031-9007
DOIs
Publication statusPublished - 2010

Bibliographical note

Copyright 2010 American Physical Society

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