title: Low-threshold spatial solitons in reverse-proton-exchanged periodically poled lithium niobate waveguides.
abstract: Combining reverse proton exchange and uniform periodic poling in LiNbO3 planar waveguides, we demonstrate low-energy spatial optical solitons by second-harmonic generation at room temperature, with a threshold as low as 23 pJ/microm at 1.5 microm.
authors.affiliation: Nonlinear Optics and OptoElectronics Laboratory, National Institute for the Physics of Matter, Università "Roma Tre," Via della Vasca Navale 84, 00146 Rome, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Leo
authors.forename: Antonio
authors.initials: A
authors.lastname: Amoroso
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Colace
authors.forename: Gaetano
authors.initials: G
authors.lastname: Assanto
authors.forename: Rostislav V
authors.initials: RV
authors.lastname: Roussev
authors.forename: Martin M
authors.initials: MM
authors.lastname: Fejer