Open AccessFemtosecond third-order nonlinear spectra of lead-germanium oxide glasses containing silver nanoparticles
Author(s) -
Leonardo De Boni,
E. C. Barbano,
Thiago A. de Assumpção,
Lino Misoguti,
L.R.P. Kassab,
Sérgio Carlos Zílio
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.006844
Subject(s) - materials science , germanium , femtosecond , optics , optoelectronics , lead oxide , nonlinear optics , silver nanoparticle , wavelength , oxide , absorption (acoustics) , germanium oxide , refractive index , saturable absorption , nanoparticle , laser , nanotechnology , silicon , fiber laser , physics , metallurgy , composite material
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.