Publication:
Spectroscopic characterization of Tm3+:TeO2-K2O-Nb2O5 glasses for 2- μm lasing applications

dc.contributor.coauthorKurt, Adnan
dc.contributor.coauthorSpeghini, Adolfo
dc.contributor.coauthorBettinelli, Marco
dc.contributor.departmentDepartment of Physics
dc.contributor.kuauthorGörgülü, Adil Tolga
dc.contributor.kuauthorÇankaya, Hüseyin
dc.contributor.kuauthorSennaroğlu, Alphan
dc.contributor.kuprofileMaster Student
dc.contributor.kuprofileResearcher
dc.contributor.kuprofileFaculty Member
dc.contributor.yokidN/A
dc.contributor.yokidN/A
dc.contributor.yokid23851
dc.date.accessioned2024-11-10T00:12:27Z
dc.date.issued2012
dc.description.abstractWe have performed detailed experiments to investigate the spectroscopic properties of a new type of tellurite based host doped with thulium: Tm2O3:(0.70)TeO2-(0.15)K2O-(0.15)Nb2O5 having Tm2O3 concentrations of 0.125, 0.25, 0.5, and 1.0 mol%. By performing a Judd-Ofelt analysis of the absorption bands, we obtained average radiative lifetimes of 2.57 +/- 0.20 and 0.35 +/- 0.01 ms for the H-3(4) and F-3(4) levels, respectively. Furthermore, we also observed that an increase in the Tm2O3 concentration from 0.125 to 1.0 mol% results in a decrease of the measured fluorescence lifetime from 814 to 439 mu s and from 258 to 47 mu s for the H-3(4) and F-3(4) levels, respectively, due to efficient non-radiative decay. The highest quantum efficiency of 32% was obtained for the sample doped with 0.125 mol% Tm2O3 for the H-3(4) level. Results show that cross relaxation becomes important as the ion concentration is increased, leading to the quenching of the 1460-nm band and enhancement of the 1860-nm emission. The highest emission cross section of 6.85 x 10(-21) Cm-2 measured for the 1860-nm band reveals the potential of this host for the development of 2-mu m lasers in bulk glass as well as fiber media. (C) 2011 Published by Elsevier B.V.
dc.description.indexedbyWoS
dc.description.indexedbyScopus
dc.description.issue1
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.volume132
dc.identifier.doi10.1016/j.jlumin.2011.07.004
dc.identifier.issn0022-2313
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-80051802586
dc.identifier.urihttp://dx.doi.org/10.1016/j.jlumin.2011.07.004
dc.identifier.urihttps://hdl.handle.net/20.500.14288/17662
dc.identifier.wos302662600021
dc.keywordsTellurite Glass
dc.keywordsThulium
dc.keywordsThulium-doped glasses
dc.keywordsSolid-State Spectroscopy
dc.keywordsLanthanide Ion-doped Glasses Rare-Earth Ions
dc.keywordsIntebsities
dc.keywordsEmissions
dc.languageEnglish
dc.publisherElsevier Science Bv
dc.sourceJournal of Luminescence
dc.subjectOptics
dc.titleSpectroscopic characterization of Tm3+:TeO2-K2O-Nb2O5 glasses for 2- μm lasing applications
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.authoridN/A
local.contributor.authorid0000-0001-7262-8831
local.contributor.authorid0000-0003-4391-0189
local.contributor.kuauthorGörgülü, Adil Tolga
local.contributor.kuauthorÇankaya, Hüseyin
local.contributor.kuauthorSennaroğlu, Alphan
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Physics
relation.isOrgUnitOfPublicationc43d21f0-ae67-4f18-a338-bcaedd4b72a4
relation.isOrgUnitOfPublication.latestForDiscoveryc43d21f0-ae67-4f18-a338-bcaedd4b72a4

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