Cerenkov-type second-harmonic generation with fundamental beams of different polarizations.

نویسندگان

  • Yan Sheng
  • Solomon M Saltiel
  • Wieslaw Krolikowski
  • Ady Arie
  • Kaloian Koynov
  • Yuri S Kivshar
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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عنوان ژورنال:
  • Optics letters

دوره 35 9  شماره 

صفحات  -

تاریخ انتشار 2010