Transparent Er3+-activated lead fluorogermanate glass ceramics

dc.contributorUniversità di Trento
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversità di Verona
dc.contributorIst. di Fotonica e Nanotecnologie
dc.contributorIst. di Fis. Applicata Nello Carrara
dc.date.accessioned2014-05-27T11:20:57Z
dc.date.accessioned2022-10-05T17:51:07Z
dc.date.available2014-05-27T11:20:57Z
dc.date.available2022-10-05T17:51:07Z
dc.date.created2014-05-27T11:20:57Z
dc.date.issued2003-12-01
dc.identifierProceedings of SPIE - The International Society for Optical Engineering, v. 4829 I, p. 133-134.
dc.identifier0277-786X
dc.identifierhttp://hdl.handle.net/11449/67504
dc.identifier10.1117/12.525851
dc.identifier2-s2.0-2342565051
dc.identifier2998503841917815
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3917144
dc.description.abstractTransparent glass ceramics containing β-PbF2:Er 3+ nanocrystals were obtained through appropriate thermal treatments of a glass of molar composition 60PbGeO3-10PbF2-30CdF 2 doped with 0.5 mol% Er3+. Their optical properties, as well as upconversion processes among erbium ions in the glass and glass ceramic matrix were studied. From absorption spectra, Judd-Ofelt parameters and radiative transition rates for several excited levels were calculated. Emission spectra in the visible and NIR regions were collected, and stimulated emission cross sections were obtained by McCumber theory for the 4F 13/2→4I15/2 transition at 1.5 μm. Red and green upconversion emissions were measured in glass and glass ceramics upon excitation at 980 nm; lifetimes were measured in order to assess the upconversion mechanisms.
dc.languageeng
dc.relationProceedings of SPIE - The International Society for Optical Engineering
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectEmission cross section
dc.subjectFluorogermanate Erbium
dc.subjectGlass ceramics
dc.subjectOptical materials
dc.subjectPhotonics
dc.subjectUpconversion
dc.subjectAmplification
dc.subjectCeramic materials
dc.subjectErbium
dc.subjectHeat treatment
dc.subjectLattice vibrations
dc.subjectMelting
dc.subjectNanostructured materials
dc.subjectOptical glass
dc.subjectRelaxation processes
dc.subjectStimulated emission
dc.subjectX ray diffraction analysis
dc.subjectFluorogermanate erbium
dc.subjectMolar composition
dc.subjectRadiative transition rates
dc.titleTransparent Er3+-activated lead fluorogermanate glass ceramics
dc.typeTrabalho apresentado em evento


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