We study experimentally nonlinear localization effects in optically induced gratings created by interfering plane waves in a photorefractive crystal. We demonstrate the generation of spatial bright solitons similar to those observed in arrays of coupled optical waveguides. We also create pairs of out-of-phase solitons, which resemble twisted localized states in nonlinear lattices.
© 2003 Optical Society of America
Dragomir Neshev, Elena Ostrovskaya, Yuri Kivshar, and Wieslaw Krolikowski, "Spatial solitons in optically induced gratings," Opt. Lett. 28, 710-712 (2003)