title: Femtosecond third-order nonlinear spectra of lead-germanium oxide glasses containing silver nanoparticles.
abstract: This work reports on the spectral dependence of both nonlinear refraction and absorption in lead-germanium oxide glasses (PbO-GeO₂) containing silver nanoparticles. We have found that this material is suitable for all-optical switching at telecom wavelengths but at the visible range it behaves either as a saturable absorber or as an optical limiter.
authors.affiliation: Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil. deboni@ifsc.usp.br
authors.forename: Leonardo
authors.initials: L
authors.lastname: De Boni
authors.forename: Emerson C
authors.initials: EC
authors.lastname: Barbano
authors.forename: Thiago A
authors.initials: TA
authors.lastname: de Assumpção
authors.forename: Lino
authors.initials: L
authors.lastname: Misoguti
authors.forename: Luciana R P
authors.initials: LR
authors.lastname: Kassab
authors.forename: Sergio C
authors.initials: SC
authors.lastname: Zilio
mesh_terms: D005857:Germanium / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D053758:Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D017711:Nonlinear Dynamics; D010087:Oxides / Q000737:chemistry*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D010087:Oxides; D005857:Germanium; D007854:Lead; D012834:Silver; C047365:lead oxide; C040516:germanium oxide