Parametric solitons in two-dimensional lattices of purely nonlinear origin
K. Gallo, A. Pasquazi, S. Stivala and G. Assanto
Phys. Rev. Lett. 100, 053901 (2008)
Abstract:We demonstrate spatial solitons via twin-beam second-harmonic generation in hexagonal lattices realized by poling lithium niobate planar waveguides. These simultons can be steered by acting on power, direction and wavelength of the fundamental frequency input.