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Multi-directional Čerenkov second harmonic generation in two-dimensional nonlinear photonic crystal

Sheng, Yan; Roppo, Vito; Ren, Mingliang; Kalinowski, Ksawery; Cojocaru, Crina; Trull, Jose; Li, Zhiyuan; Koynov, Kaloian; Krolikowski, Wieslaw


We study Cerenkov-type second-harmonic generation in a ˇ two-dimensional quasi-periodically poled LiNbO3 crystal. We employ a new geometry of interaction to observe simultaneous emission of multidirectional nonlinear Cerenkov radiation with comparable intensities. This ˇ opens a way to control the angle of Cerenkov emission by tailoring the ˇ nonlinearity of the material, which is otherwise intrinsically defined by dielectric constants of the medium and their dispersion.

CollectionsANU Research Publications
Date published: 2012-02-13
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.20.003948
Access Rights: Open Access


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