You are in the accessibility menu

Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authordos Santos, P. V.-
dc.contributor.authorVermelho, MVD-
dc.contributor.authorGouveia, E. A.-
dc.contributor.authorde Araujo, M. T.-
dc.contributor.authorGouveia-Neto, A. S.-
dc.contributor.authorCassanjes, F. C.-
dc.contributor.authorRibeiro, SJL-
dc.contributor.authorMessaddeq, Younes-
dc.identifier.citationJournal of Applied Physics. Melville: Amer Inst Physics, v. 90, n. 12, p. 6550-6552, 2001.-
dc.description.abstractEfficient energy upconversion of cw radiation at 1.064 mum into blue, red, and near infrared emission in Tm3+-doped Yb3+-sensitized 60TeO(2)-10GeO(2)-10K(2)O-10Li(2)O-10Nb(2)O(5) glasses is reported. Intense blue upconversion luminescence at 485 nm corresponding to the Tm3+ (1)G(4)--> H-3(6) transition with a measured absolute power of 0.1 muW for 800 mW excitation power at room temperature is observed. The experimental results also revealed a sevenfold enhancement in the upconversion efficiency when the sample was heated from room temperature to 235 degreesC yielding 0.7 muW of blue absolute fluorescence power for 800 mW pump power. High brightness emission around 800 nm (F-3(4)--> H-3(6)) in addition to a less intense 655 nm ((1)G(4)--> H-3(4) and F-3(2,3)--> H-3(6)) fluorescence is also recorded. The energy upconversion excitation mechanism for thulium emitting levels is assigned to multiphonon-assisted anti-Stokes excitation of the ytterbium-sensitizer followed by multiphonon-assisted sequential energy-transfer processes. (C) 2001 American Institute of Physics.en
dc.publisherAmerican Institute of Physics (AIP)-
dc.sourceWeb of Science-
dc.titleEfficient energy upconversion emission in Tm3+/Yb3+-codoped TeO2-based optical glasses excited at 1.064 mu men
dc.contributor.institutionUniversidade Federal de Alagoas (UFAL)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Fed Alagoas, Dept Fis, BR-57072970 Maceio, Al, Brazil-
dc.description.affiliationUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil-
dc.description.affiliationUnespUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Applied Physics-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.