We report on the experimental observation of corner surface solitons localized at the edges joining planar interfaces of hexagonal waveguide array with uniform nonlinear medium. The face angle between these interfaces has a strong impact on the threshold of soliton excitation as well as on the light energy drift and diffraction spreading.
© 2008 Optical Society of America
Original Manuscript: April 7, 2008
Manuscript Accepted: April 24, 2008
Published: June 30, 2008
A. Szameit, Y. V. Kartashov, V. A. Vysloukh, M. Heinrich, F. Dreisow, T. Pertsch, S. Nolte, A. Tünnermann, F. Lederer, and L. Torner, "Angular surface solitons in sectorial hexagonal arrays," Opt. Lett. 33, 1542-1544 (2008)