We report the observation of large self-deflection of 2-D bright photorefractive solitons in LiNbO3 crystal under a dc applied field. Beam deflection as large as 300 µm after a 7 mm propagation distance is reported, leading to formation of curved 2-D waveguides. We attribute this large deflection to the low level of impurity acceptors present in the samples, as confirmed by numerical results from a time-dependent photorefractive model.
© 2005 Optical Society of America
(160.2260) Materials : Ferroelectrics
(160.5320) Materials : Photorefractive materials
(190.0190) Nonlinear optics : Nonlinear optics
(190.5330) Nonlinear optics : Photorefractive optics
(190.5940) Nonlinear optics : Self-action effects
M. Chauvet, V. Coda, H. Maillotte, E. Fazio, and G. Salamo, "Large self-deflection of soliton beams in LiNbO3," Opt. Lett. 30, 1977-1979 (2005)