Efficient energy upconversion emission in Tm3+/Yb3+-codoped TeO2-based optical glasses excited at 1.064 mu m

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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 [UNESP]
dc.contributor.institutionUniversidade Federal de Alagoas (UFAL)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:26:52Z
dc.date.available2014-05-20T15:26:52Z
dc.date.issued2001-12-15
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.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.format.extent6550-6552
dc.identifierhttp://dx.doi.org/10.1063/1.1413489
dc.identifier.citationJournal of Applied Physics. Melville: Amer Inst Physics, v. 90, n. 12, p. 6550-6552, 2001.
dc.identifier.doi10.1063/1.1413489
dc.identifier.fileWOS000172489800117.pdf
dc.identifier.issn0021-8979
dc.identifier.lattes6446047463034654
dc.identifier.lattes2998503841917815
dc.identifier.urihttp://hdl.handle.net/11449/36943
dc.identifier.wosWOS:000172489800117
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.titleEfficient energy upconversion emission in Tm3+/Yb3+-codoped TeO2-based optical glasses excited at 1.064 mu men
dc.typeArtigo
dcterms.licensehttp://publishing.aip.org/authors/web-posting-guidelines
dcterms.rightsHolderAmer Inst Physics
unesp.author.lattes6446047463034654
unesp.author.lattes2998503841917815
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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