Cerenkov-Type Second-Harmonic Generation in Two-Dimensional Nonlinear Photonic Structures
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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. © 2006 IEEE.
author list (cited authors)
Saltiel, S. M., Sheng, Y., Voloch-Bloch, N., Neshev, D. N., Krolikowski, W., Arie, A., Koynov, K., & Kivshar, Y. S.