Cerenkov-type second-harmonic generation with fundamental beams of different polarizations. Academic Article uri icon

abstract

  • 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.

author list (cited authors)

  • Sheng, Y., Saltiel, S. M., Krolikowski, W., Arie, A., Koynov, K., & Kivshar, Y. S.

citation count

  • 27

publication date

  • April 2010