Cerenkov-type second-harmonic generation with fundamental beams of different polarizations.
نویسندگان
چکیده
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 ferroelectric domains.
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ورودعنوان ژورنال:
- Optics letters
دوره 35 9 شماره
صفحات -
تاریخ انتشار 2010