Visible to infrared energy conversion in Pr3+-Yb3+ co-doped fluoroindate glasses

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dc.contributor.authorBorrero-González, L. J.
dc.contributor.authorGalleani, G. [UNESP]
dc.contributor.authorManzani, D. [UNESP]
dc.contributor.authorNunes, L. A O
dc.contributor.authorRibeiro, Sidney José Lima [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:30:47Z
dc.date.available2014-05-27T11:30:47Z
dc.date.issued2013-10-01
dc.description.abstractProcesses involving visible to infrared energy conversion are presented for Pr3+-Yb3+ co-doped fluoroindate glasses. The emission in the visible and infrared regions, the luminescence decay time of the Pr 3+:3P0 → 3H4 (482 nm), Pr3+:1D2 → 3H6 (800 nm), Yb3+:2F5/2 → 2F 7/2 (1044 nm) transitions and the photoluminescence excitation spectra were measured in Pr3+ samples and in Pr3+-Yb 3+ samples as a function of the Yb3+ concentration. In addition, energy transfer efficiencies were estimated from Pr3+: 3P0 and Pr3+:1D2 levels to Yb3+:2F7/2 level. Down-Conversion (DC) emission is observed due to a combination of two different processes: 1-a one-step cross relaxation (Pr3+:3P0 → 1G4; Yb3+:2F7/2 → 2F5/2) resulting in one photon emitted by Pr3+ (1G4 → 3H5) and one photon emitted by Yb3+ (2F7/2 → 2F5/2); 2-a resonant two-step first order energy transfer, where the first part of energy is transferred to Yb3+ neighbor through cross relaxation (Pr3+:3P0 → 1G4; Yb3+:2F7/2 → 2F5/2) followed by a second energy transfer step (Pr 3+:1G4 → 3H4; Yb3+:2F7/2 → 2F5/2). A third process leading to one IR photon emission to each visible photon absorbed involves cross relaxation energy transfer (Pr3+: 1D2 → 3F4; Yb 3+:2F7/2 → 2F5/2). © 2013 Elsevier B.V. All rights reserved.en
dc.description.affiliationInstituto de Física de São Carlos Universidade de São Paulo, CP 369, São Carlos, SP 13560-970
dc.description.affiliationInstitute of Chemistry São Paulo State Univ - UNESP, CP 355, Araraquara, SP 14801-970
dc.description.affiliationUnespInstitute of Chemistry São Paulo State Univ - UNESP, CP 355, Araraquara, SP 14801-970
dc.format.extent2085-2089
dc.identifierhttp://dx.doi.org/10.1016/j.optmat.2013.05.024
dc.identifier.citationOptical Materials, v. 35, n. 12, p. 2085-2089, 2013.
dc.identifier.doi10.1016/j.optmat.2013.05.024
dc.identifier.issn0925-3467
dc.identifier.lattes6446047463034654
dc.identifier.orcid0000-0003-3286-9440
dc.identifier.scopus2-s2.0-84885078551
dc.identifier.urihttp://hdl.handle.net/11449/76729
dc.identifier.wosWOS:000326660500008
dc.language.isoeng
dc.relation.ispartofOptical Materials
dc.relation.ispartofjcr2.320
dc.relation.ispartofsjr0,592
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectFluoroindate glasses Frequency down-conversion Lanthanides Energy transfer
dc.titleVisible to infrared energy conversion in Pr3+-Yb3+ co-doped fluoroindate glassesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.lattes6446047463034654
unesp.author.orcid0000-0003-3286-9440[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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