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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBorrero-González, L. J.
dc.creatorGalleani, G.
dc.creatorManzani, D.
dc.creatorNunes, L. A O
dc.creatorRibeiro, Sidney José Lima
dc.date2014-05-27T11:30:47Z
dc.date2016-10-25T18:54:39Z
dc.date2014-05-27T11:30:47Z
dc.date2016-10-25T18:54:39Z
dc.date2013-10-01
dc.date.accessioned2017-04-06T02:40:41Z
dc.date.available2017-04-06T02:40:41Z
dc.identifierOptical Materials, v. 35, n. 12, p. 2085-2089, 2013.
dc.identifier0925-3467
dc.identifierhttp://hdl.handle.net/11449/76729
dc.identifierhttp://acervodigital.unesp.br/handle/11449/76729
dc.identifier10.1016/j.optmat.2013.05.024
dc.identifierWOS:000326660500008
dc.identifier2-s2.0-84885078551
dc.identifierhttp://dx.doi.org/10.1016/j.optmat.2013.05.024
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/897419
dc.descriptionProcesses 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.
dc.languageeng
dc.relationOptical Materials
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectFluoroindate glasses Frequency down-conversion Lanthanides Energy transfer
dc.titleVisible to infrared energy conversion in Pr3+-Yb3+ co-doped fluoroindate glasses
dc.typeOtro


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