Title :
Cerenkov-Type Second-Harmonic Generation in Two-Dimensional Nonlinear Photonic Structures
Author :
Saltiel, Solomon Mois ; Sheng, Yan ; Voloch-Bloch, Noa ; Neshev, Dragomir N. ; Krolikowski, Wieslaw ; Arie, Ady ; Koynov, Kaloian ; Kivshar, Yuri S.
Author_Institution :
Nonlinear Phys. Center & Laser Phys. Center, Australian Nat. Univ., Canberra, ACT, Australia
Abstract :
We study the Cerenkov-type second-harmonic generation in several different two-dimensional nonlinear photonic structures formed in birefringent crystals with the 3 m 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.
Keywords :
birefringence; optical harmonic generation; optical materials; photonic crystals; Cerenkov-type second-harmonic generation; birefringent crystals; double Cerenkov-like second-harmonic ring; ferroelectric domains; hexagonal symmetry; parametric generation; single Cerenkov-like second-harmonic ring; sixfold azimuthal modulation; two-dimensional nonlinear photonic structures; Birefringence; Ferroelectric materials; Free electron lasers; Frequency conversion; Geometry; Laser theory; Optical modulation; Photonic crystals; Physics; Polarization; Cerenkov phase-matching; nonlinear diffraction; quasi-phase-matching; second-harmonic generation;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2009.2030147
