Generation of second-harmonic conical waves via nonlinear bragg diffraction. Academic Article uri icon


  • We report on the observation of second-harmonic conical waves generated in a novel geometry of the transverse excitation of an annular periodically poled nonlinear photonic structure by a fundamental Gaussian beam. We show that the conical beams are formed as a result of the higher-order nonlinear Bragg diffraction involving two parametric processes in which an ordinary fundamental wave is converted simultaneously into ordinary and extraordinary polarized second harmonics.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Saltiel, S. M., Neshev, D. N., Fischer, R., Krolikowski, W., Arie, A., & Kivshar, Y. S.

citation count

  • 121

complete list of authors

  • Saltiel, Solomon M||Neshev, Dragomir N||Fischer, Robert||Krolikowski, Wieslaw||Arie, Ady||Kivshar, Yuri S

publication date

  • March 2008