title: Study of broadband near-infrared emission in Tm3+-Er3+ codoped TeO2-WO3-PbO glasses.
abstract: In this work, we report the near-infrared emission properties of Tm(3+)-Er(3+) codoped tellurite TeO(2)-WO(3)-PbO glasses under 794 nm excitation. A broad emission from 1350 to 1750 nm corresponding to the Tm(3+) and Er(3+) emissions is observed. The full width at half-maximum of this broadband increases with increasing [Tm]/[Er] concentration ratio up to a value of ~ 160 nm. The energy transfer between Tm(3+) and Er(3+) ions is evidenced by both the temporal behavior of the near-infrared luminescence and the effect of Tm3+ codoping on the visible upconversion of Er(3+) ions.
authors.affiliation: Departamento Física Aplicada I, Escuela Superior de Ingeniería, Alda. Urquijo s/n 48013 Bilbao, Spain. wupbacrr@bi.ehu.es
authors.forename: R
authors.initials: R
authors.lastname: Balda
authors.forename: J
authors.initials: J
authors.lastname: Fernández
authors.forename: J M
authors.initials: JM
authors.lastname: Fernández-Navarro
mesh_terms: D005898:Glass / Q000737:chemistry*; D007259:Infrared Rays; D008029:Lighting / Q000379:methods*; D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing; D012542:Scattering, Radiation; D019265:Spectroscopy, Near-Infrared; D013691:Tellurium / Q000737:chemistry*
chemical_list: C016774:tellurium dioxide; D013691:Tellurium