Sensitized thulium blue and red upconversion emission and energy-transfer processes in Nd3+/Yb3+/Tm3+-codoped PbGeO3-based glass excited around 800 nm

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Autor(es): dc.contributorUniversidade Federal Rural de Pernambuco-
Autor(es): dc.contributorUniversidade Federal de Alagoas-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorGouveia-Neto, A. S.-
Autor(es): dc.creatorDos Santos, P. V.-
Autor(es): dc.creatorBueno, L.-
Autor(es): dc.creatorRibeiro, S. J.L.-
Autor(es): dc.creatorMessaddeq, Y.-
Data de aceite: dc.date.accessioned2025-08-21T17:00:36Z-
Data de disponibilização: dc.date.available2025-08-21T17:00:36Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2003-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1109/EQEC.2003.1314073-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/232469-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/232469-
Descrição: dc.descriptionThis paper reports on the generation of bright blue and red upconversion luminescence through the sensitization of thulium ions in Nd3+Yb3+Tm3+ triply-doped 70%XoPbGeO3:15%PbF2:15%CdF2-glass excited by a diode laser source around 800 nm. The upconversion fluorescence spectra of Tm3+ ions under 800 nm excitation is presented, for a sample codoped with Yb and a Nd3+Yb3+Tm3+ triply-doped sample. It is observed that the presence of Nd3+ in the system, produces a tenfold enhancement in the blue emission associated to the 1G4 - 3H6 transition of Tm3+ ions, as compared to samples doped with Tm3+Yb3+. The dependence of the upconversion emission intensity as a function of the excitation power was examined and a quadratic power law behavior was obtained indicating the participation of two pump photons in the upconversion excitation mechanism. The upconversion excitation process of the Tm3+ ion 1G4 emitting level was achieved by an initial energy-transfer process from the 800 nm excited Nd3+ to Yb3+. The excited Yb3+ then, transfer its energy to a Tm3+ ion at the 3H4 level excited by a pump photon at 800 nm.-
Descrição: dc.descriptionDepartamento de Fisica e Matemática Universidade Federal Rural de Pernambuco-
Descrição: dc.descriptionDepartamento de Fisica Universidade Federal de Alagoas-
Descrição: dc.descriptionInstituto de Qulmica UNESP-
Descrição: dc.descriptionInstituto de Qulmica UNESP-
Formato: dc.format216-
Idioma: dc.languageen-
Relação: dc.relation2003 European Quantum Electronics Conference, EQEC 2003-
???dc.source???: dc.sourceScopus-
Título: dc.titleSensitized thulium blue and red upconversion emission and energy-transfer processes in Nd3+/Yb3+/Tm3+-codoped PbGeO3-based glass excited around 800 nm-
Tipo de arquivo: dc.typeaula digital-
Aparece nas coleções:Repositório Institucional - Unesp

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