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dc.contributor.authorCatunda, T.-
dc.contributor.authorBaesso, M. L.-
dc.contributor.authorMessaddeq, Younes-
dc.contributor.authorAegerter, M. A.-
dc.identifier.citationJournal of Non-Crystalline Solids, v. 213-214, p. 225-230.-
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.subjectDoping (additives)-
dc.subjectElectron energy levels-
dc.subjectPumping (laser)-
dc.subjectRefractive index-
dc.subjectSaturation (materials composition)-
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.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.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.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Non-Crystalline Solids-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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