Observation of surface gap solitons in semi-infinite waveguide arrays. Academic Article uri icon


  • We report on the observation of surface gap solitons found to exist at the interface between uniform and periodic dielectric media with defocusing nonlinearity. We demonstrate strong self-trapping at the edge of a LiNbO3 waveguide array and the formation of staggered surface solitons with propagation constant inside the first photonic band gap. We study the crossover between linear repulsion and nonlinear attraction at the surface, revealing the mechanism of nonlinearity-mediated stabilization of the surface gap modes.

published proceedings

  • Phys Rev Lett

citation count

  • 170

complete list of authors

  • Rosberg, Christian R||Neshev, Dragomir N||Krolikowski, Wieslaw||Mitchell, Arnan||Vicencio, Rodrigo A||Molina, Mario I||Kivshar, Yuri S

publication date

  • August 2006