Time-resolved Z-scan and thermal lens measurements in Er+3 and Nd+3 doped fluoroindate glasses

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dc.contributor.authorCatunda, T.
dc.contributor.authorBaesso, M. L.
dc.contributor.authorMessaddeq, Younes [UNESP]
dc.contributor.authorAegerter, M. A.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual de Maringá (UEM)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInstitut für Neue Materialien
dc.date.accessioned2014-05-27T11:18:14Z
dc.date.available2014-05-27T11:18:14Z
dc.date.issued1997-05-12
dc.description.abstractIn rare earth ion doped solids, a resonant non-linear refractive index, n2, appears when the laser pumps one of the ion excited states and the refractive index change is proportional to the excited state population. In these solids there are usually thermal and non-thermal lensing effects, where the non-thermal one is due to the polarizability difference, Δα, between excited and ground states of the ions. We have used the time resolved Z-scan and a mode-mismatched thermal lens technique with an Ar+ ion laser in Er+3 (20ZnF2-20SrF2-2NaF-16BaF2-6GaF3-(36 - x)InF3-xErF3, with x= 1, 2, 3 and 4 mol%) and Nd+3 (20SrF2-16BaF2-20ZnF2-2GdF3-2NaF-(40 - x)InF3-xNdF3, with x = 0.1, 0.25, 0.5-1 mol%) doped fluoroindate glasses. In both samples we found that the non-linear refraction is due to the thermal effect, while the non-thermal effect is negligible. This result indicates that in fluoride glasses Δα is very small (less than 10-26 cm3). We also measured the imaginary part of the non-linear refractive index (n″2) due to absorption saturation.en
dc.description.affiliationInst. de Fisica de São Carlos Universidade de São Paulo, C.P. 369, 13560-970, São Carlos, SP
dc.description.affiliationDept. de Física Univ. Estadual de Maringá, CEP, 87020-900 Maringá, PR
dc.description.affiliationInstituto de Química Univ. Estadual de São Paulo, CEP, 14800-900 Araraquara, SP
dc.description.affiliationInstitut für Neue Materialien, Im Stadtwald, Gebaude 43, D-66123 Saarbrucken
dc.format.extent225-230
dc.identifierhttp://dx.doi.org/10.1016/S0022-3093(97)00055-0
dc.identifier.citationJournal of Non-Crystalline Solids, v. 213-214, p. 225-230.
dc.identifier.doi10.1016/S0022-3093(97)00055-0
dc.identifier.issn0022-3093
dc.identifier.lattes2998503841917815
dc.identifier.scopus2-s2.0-18244423259
dc.identifier.urihttp://hdl.handle.net/11449/65108
dc.language.isoeng
dc.relation.ispartofJournal of Non-Crystalline Solids
dc.relation.ispartofjcr2.488
dc.relation.ispartofsjr0,722
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectDoping (additives)
dc.subjectElectron energy levels
dc.subjectIons
dc.subjectPumping (laser)
dc.subjectRefractive index
dc.subjectSaturation (materials composition)
dc.subjectScanning
dc.subjectSolid state lasers
dc.subjectThermal effects
dc.subjectThermal variables measurement
dc.subjectArgon ion laser
dc.subjectFluoroindate glasses
dc.subjectNon-thermal lensing effect
dc.subjectPolarizability difference
dc.subjectThermal lens measurements
dc.subjectThermal lensing effect
dc.subjectOptical glass
dc.titleTime-resolved Z-scan and thermal lens measurements in Er+3 and Nd+3 doped fluoroindate glassesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.lattes2998503841917815
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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