title: Nonlinear shift of spatial solitons at a graded dielectric interface.
abstract: We investigate total internal reflection of optical spatial solitons at the interface between two regions of nematic liquid crystals with different optical densities. Due to nonlinear molecular reorientation, the solitons experience a penetration depth, hence, a lateral shift that depends on the excitation, with lateral shifts from 0.7 to 1.2 mm as input powers increased from 1.6 to 9.3 mW.
authors.affiliation: Nonlinear Optics and OptoElectronics Laboratory, Department of Electronic Engineering, IFN and CNISM University, Roma Tre, Via della Vasca Navale 84 - 00146, Rome, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Peccianti
authors.forename: Gaetano
authors.initials: G
authors.lastname: Assanto
authors.forename: Andriy
authors.initials: A
authors.lastname: Dyadyusha
authors.forename: Malgosia
authors.initials: M
authors.lastname: Kaczmarek