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Čerenkov-type second-harmonic generation with fundamental beams of different polarizations

Sheng, Yan; Saltiel, Solomon M; Arie, Ady; Koynov, Kaloian; Krolikowski, Wieslaw; Kivshar, Yuri


We analyze the conical second-harmonic generation via Cerenkov-type phase matching in two-dimensional decagonal nonlinear photonic quasi-crystals for linear, circular, and elliptical polarized fundamental beams. Depending on the polarization state, we observe either centrosymmetric or noncentrosymmetric intensity modulation of the second-harmonic rings. We explain this effect by employing the concept of effective quadratic nonlinearity combined with the hexagonal symmetry of the individual...[Show more]

CollectionsANU Research Publications
Date published: 2010-04-20
Type: Journal article
Source: Optics letters
DOI: 10.1364/OL.35.001317


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