Enhanced optical properties of germanate and tellurite glasses containing metal or semiconductor nanoparticles

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dc.contributor.authorDe Araujo, Cid Bartolomeu
dc.contributor.authorSilvério Da Silva, Diego
dc.contributor.authorAlves de Assumpção, Thiago Alexandre
dc.contributor.authorKassab, Luciana Reyes Pires [UNESP]
dc.contributor.authorMariano Da Silva, Davinson [UNESP]
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:29:29Z
dc.date.available2014-05-27T11:29:29Z
dc.date.issued2013-05-13
dc.description.abstractGermanium- and tellurium-based glasses have been largely studied due to their recognized potential for photonics. In this paper, we review our recent studies that include the investigation of the Stokes and anti-Stokes photoluminescence (PL) in different glass systems containing metallic and semiconductor nanoparticles (NPs). In the case of the samples with metallic NPs, the enhanced PL was attributed to the increased local field on the rare-earth ions located in the proximity of the NPs and/or the energy transfer from the metallic NPs to the rare-earth ions. For the glasses containing silicon NPs, the PL enhancement was mainly due to the energy transfer from the NPs to the Er3+ ions. The nonlinear (NL) optical properties of PbO-GeO 2 films containing gold NPs were also investigated. The experiments in the pico- and subpicosecond regimes revealed enhanced values of the NL refractive indices and large NL absorption coefficients in comparison with the films without gold NPs. The reported experiments demonstrate that germanate and tellurite glasses, having appropriate rare-earth ions doping and NPs concentration, are strong candidates for PL-based devices, all-optical switches, and optical limiting. © 2013 Cid Bartolomeu de Araujo et al.en
dc.description.affiliationDepartamento de Física Universidade Federal de Pernambuco, 50740-540 Recife, PE
dc.description.affiliationDepartamento de Engenharia de Sistemas Eletrônicos Escola Politécnica da USP, 05508-900 São Paulo, SP
dc.description.affiliationLaboratório de Tecnologia em Materiais Fotônicos e Optoeletrônicos Faculdade de Tecnologia de São Paulo CEETEPS/UNESP, 01124-060 São Paulo, SP
dc.description.affiliationUnespLaboratório de Tecnologia em Materiais Fotônicos e Optoeletrônicos Faculdade de Tecnologia de São Paulo CEETEPS/UNESP, 01124-060 São Paulo, SP
dc.identifierhttp://dx.doi.org/10.1155/2013/385193
dc.identifier.citationThe Scientific World Journal, v. 2013.
dc.identifier.doi10.1155/2013/385193
dc.identifier.file2-s2.0-84877281435.pdf
dc.identifier.issn1537-744X
dc.identifier.scopus2-s2.0-84877281435
dc.identifier.urihttp://hdl.handle.net/11449/75385
dc.identifier.wosWOS:000318090900001
dc.language.isoeng
dc.relation.ispartofThe Scientific World Journal
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectgermanate
dc.subjectglass
dc.subjectgold nanoparticle
dc.subjectmetal nanoparticle
dc.subjectsilicon
dc.subjecttellurite
dc.subjectunclassified drug
dc.subjectgermanium
dc.subjectgermanium dioxide
dc.subjecttellurium
dc.subjecttellurous acid
dc.subjectabsorption
dc.subjectenergy transfer
dc.subjectphotoluminescence
dc.subjectphoton
dc.subjectreview
dc.subjectsemiconductor
dc.subjectchemistry
dc.subjectmaterials testing
dc.subjectrefractometry
dc.subjectultrastructure
dc.subjectGermanium
dc.subjectMaterials Testing
dc.subjectMetal Nanoparticles
dc.subjectRefractometry
dc.subjectSemiconductors
dc.subjectTellurium
dc.titleEnhanced optical properties of germanate and tellurite glasses containing metal or semiconductor nanoparticlesen
dc.typeArtigo
dcterms.licensehttp://www.hindawi.com/journals/aaa/guidelines/

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