Journal
IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume 45, Issue 11, Pages 1465-1472Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2009.2030147
Keywords
Cerenkov phase-matching; nonlinear diffraction; quasi-phase-matching; second-harmonic generation
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Funding
- Australian Research Council
- Israel Science Foundation [960/05]
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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.
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