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Switching from nonlinear beam focusing to defocusing in periodic structures

Bennet, Francis; Amuli, Ines; Neshev, Dragomir; Krolikowski, Wieslaw; Sukhorukov, Andrey; Kivshar, Yuri


We demonstrate experimentally the transition of nonlinear beam focusing to defocusing by varying the modulation depth of a periodic system. The observed effect illustrates the fundamental crossover when the periodic system changes properties to homogeneous.

CollectionsANU Research Publications
Date published: 2010
Type: Conference paper
Source: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010


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