title: Nonlinear coupling in a planar waveguide.
abstract: The thermal nonlinear response of a waveguide produced by sputtering a Corning 7059 glass film over a nonlinear substrate(Corning CS2-61) is studied with a pump-probe technique in a quasi-cw regime. The coupling efficiency is found to beafunction of pump power and chopping frequency. The coupling zone is scanned with a probe beam to examine the spatial dependence of the coupling efficiency.
authors.affiliation: Dipartimento di Energetica, Universitcá degli Studi di Roma 1, Via Scarpa 16, 00167 Rome, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Bertolotti
authors.forename: E
authors.initials: E
authors.lastname: Fazio
authors.forename: A
authors.initials: A
authors.lastname: Ferrari
authors.forename: F
authors.initials: F
authors.lastname: Michelotti
authors.forename: G C
authors.initials: GC
authors.lastname: Righini
authors.forename: C
authors.initials: C
authors.lastname: Sibilia