Twentyfold blue upconversion emission enhancement through thermal effects in Pr3+/Yb3+-codoped fluoroindate glasses excited at 1.064 mu m

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dc.contributor.authorOliveira, A. S.
dc.contributor.authorGouveia, E. A.
dc.contributor.authorde Araujo, M. T.
dc.contributor.authorGouveia-Neto, A. S.
dc.contributor.authorde Araujo, C. B.
dc.contributor.authorMessaddeq, Younes [UNESP]
dc.contributor.institutionUniversidade Federal de Alagoas (UFAL)
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:19Z
dc.date.available2014-05-20T15:21:19Z
dc.date.issued2000-05-01
dc.description.abstractInfrared-to-visible upconversion emission enhancement through thermal effects in Yb3+-sensitized Pr3+-doped fluoroindate glasses excited at 1.064 mu m is investigated. A twentyfold increase in the 485 nm blue emission intensity as the sample temperature was varied from 20 to 260 degrees C was observed. The visible upconversion fluorescence enhancement is ascribed to the temperature dependent multiphonon-assisted anti-Stokes excitation of the ytterbium sensitizer and excited-state absorption of the praseodymium acceptor. A model based upon conventional rate equations considering a temperature dependent effective absorption cross section for the F-2(7/2)-->F-2(5/2) transition of the Yb3+ and (1)G(4)-->P-3(0) excited-state absorption of the Pr3+, agrees very well with the experimental results. (C) 2000 American Institute of Physics. [S0021-8979(00)08209-8].en
dc.description.affiliationUniv Fed Alagoas, Dipartimento Fis, BR-57072970 Maceio, AL, Brazil
dc.description.affiliationUniv Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
dc.description.affiliationUNESP, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, BR-14800900 Araraquara, SP, Brazil
dc.format.extent4274-4278
dc.identifierhttp://dx.doi.org/10.1063/1.373065
dc.identifier.citationJournal of Applied Physics. Melville: Amer Inst Physics, v. 87, n. 9, p. 4274-4278, 2000.
dc.identifier.doi10.1063/1.373065
dc.identifier.fileWOS000086724100036.pdf
dc.identifier.issn0021-8979
dc.identifier.lattes2998503841917815
dc.identifier.urihttp://hdl.handle.net/11449/32467
dc.identifier.wosWOS:000086724100036
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofJournal of Applied Physics
dc.relation.ispartofjcr2.176
dc.relation.ispartofsjr0,739
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleTwentyfold blue upconversion emission enhancement through thermal effects in Pr3+/Yb3+-codoped fluoroindate glasses excited at 1.064 mu men
dc.typeArtigo
dcterms.licensehttp://publishing.aip.org/authors/web-posting-guidelines
dcterms.rightsHolderAmer Inst Physics
unesp.author.lattes2998503841917815
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Química Inorgânica - IQ