Spatiotemporal toroidal waves from the transverse second-harmonic generation. Academic Article uri icon


  • We study the second-harmonic generation via transversely matched interaction of two counterpropagating ultrashort pulses in chi(2) photonic structures. We show that the emitted second-harmonic wave attains the form of spatially expanding toroid with the initial thickness given by the cross correlation of the pulses. We demonstrate the formation of such toroidal waves in crystals with random ferroelectric domains as well as in annularly poled nonlinear photonic structures.

published proceedings

  • Opt Lett

author list (cited authors)

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

citation count

  • 13

complete list of authors

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

publication date

  • March 2008