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  • Femtosecond third-order nonlinear spectra of lead-germanium oxide glasses containing silver nanoparticles.

Femtosecond third-order nonlinear spectra of lead-germanium oxide glasses containing silver nanoparticles.

Optics express (2012-03-16)
Leonardo De Boni, Emerson C Barbano, Thiago A de Assumpção, Lino Misoguti, Luciana R P Kassab, Sergio C Zilio
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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Germanium(IV) oxide, ≥99.99% trace metals basis
Sigma-Aldrich
Germanium(IV) oxide, (crystalline powder), 99.998% trace metals basis
Sigma-Aldrich
Germanium(IV) oxide, powder, 99.999% trace metals basis
Sigma-Aldrich
Lead(II) oxide, 99.999% trace metals basis
Sigma-Aldrich
Lead(II) oxide, powder, <10 μm, ReagentPlus®, ≥99.9% trace metals basis
Sigma-Aldrich
Lead(II) oxide, puriss. p.a., ≥99.0% (KT), yellow
Sigma-Aldrich
Lead(II) oxide, ACS reagent, ≥99.0%