Cerenkov-Type Second-Harmonic Generation in Two-Dimensional Nonlinear Photonic Structures
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Saltiel, Solomon
Sheng, Yan
Voloch, Noa
Neshev, Dragomir
Arie, Ady
Koynov, Kaloian
Krolikowski, Wieslaw
Kivshar, Yuri
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Institute of Electrical and Electronics Engineers (IEEE Inc)
Abstract
We study the Cerenkov-type second-harmonic generation in several different two-dimensional nonlinear photonic structures formed in birefringent crystals with the 3m symmetry. Depending on the degree of birefringence, we observe either single or double Cerenkov-like second-harmonic rings. We discuss the properties of these parametrically generated rings and show that their sixfold azimuthal modulation is associated with the hexagonal symmetry of the individual ferroelectric domains.
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IEEE Journal of Quantum Electronics
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2037-12-31
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