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dc.contributor.authorBarbosa, A. J.-
dc.contributor.authorDias Filho, F. A.-
dc.contributor.authorMessaddeq, Younes-
dc.contributor.authorRibeiro, Sidney José Lima-
dc.contributor.authorGoncalves, R. R.-
dc.contributor.authorLuthi, S. R.-
dc.contributor.authorGomes, A. S. L.-
dc.date.accessioned2014-05-20T15:25:56Z-
dc.date.accessioned2016-10-25T18:00:32Z-
dc.date.available2014-05-20T15:25:56Z-
dc.date.available2016-10-25T18:00:32Z-
dc.date.issued2006-09-15-
dc.identifierhttp://dx.doi.org/10.1016/j.jnoncrysol.2006.03.095-
dc.identifier.citationJournal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 352, n. 32-35, p. 3636-3641, 2006.-
dc.identifier.issn0022-3093-
dc.identifier.urihttp://hdl.handle.net/11449/36246-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/36246-
dc.description.abstractSodium phosphoniobate glasses with the composition (mol%) 75NaPO(3)-25Nb(2)O(5) and containing 2 mol% Yb3+ and x mol% Er3+ (0.01 <= x <= 2) were prepared using the conventional melting/casting process. Er3+ emission at 1.5 mu m and infrared-to-visible upconversion emission, upon excitation at 976 nm, are evaluated as a function of the Er3+ concentration. For the lowest Er3+ content, 1.5 mu m emission quantum efficiency was 90%. Increasing the Er3+ concentration up to 2 mol%, the emission quantum efficiency was observed to decrease to 37% due to concentration quenching. The green and red upconversion emission intensity ratio was studied as a function of Yb3+ co-doping and the Er3+-Er3+ energy transfer processes. (c) 2006 Elsevier B.V. All rights reserved.en
dc.format.extent3636-3641-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectglassespt
dc.subjectlaser-matter interactionspt
dc.subjectoptical spectroscopypt
dc.subjectabsorptionpt
dc.subjectluminescencept
dc.subjectupconversionpt
dc.subjectphosphatespt
dc.subjectrare-earths in glassespt
dc.title1.5 mu m emission and infrared-to-visible frequency upconversion in Er+3/Yb+3-doped phosphoniobate glassesen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)-
dc.description.affiliationUNESP, Inst Quim, Dept Quim Gerale, BR-14801970 Araraquara, SP, Brazil-
dc.description.affiliationUniv Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil-
dc.description.affiliationUnespUNESP, Inst Quim, Dept Quim Gerale, BR-14801970 Araraquara, SP, Brazil-
dc.identifier.doi10.1016/j.jnoncrysol.2006.03.095-
dc.identifier.wosWOS:000240706000047-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Non-Crystalline Solids-
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