title: Reflection of quadratic solitons at the boundary of nonlinear media.
abstract: We report experimental evidence of soliton reflection at the boundary of quadratic nonlinear media. The evolution of beams incident upon the interface of periodically poled LiNbO3 and uniform LiNbO3 is considered; in the whole device the linear refractive index is homogeneous. Linear beam transmission and soliton reflection at the nonlinear phase-mismatched boundary were observed. Numerical simulations that correspond to the experiments are also presented.
authors.affiliation: Istituto Nazionale per la Fisica della Materia, Università di Brescia, via Branze 38, 25123 Brescia, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Baronio
authors.forename: Costantino
authors.initials: C
authors.lastname: De Angelis
authors.forename: Paul-Henri
authors.initials: PH
authors.lastname: Pioger
authors.forename: Vincent
authors.initials: V
authors.lastname: Couderc
authors.forename: Alain
authors.initials: A
authors.lastname: Barthélémy