title: Novel approach towards cross-relaxation energy transfer calculation applied on highly thulium doped tellurite glasses.
abstract: In this paper we calculated, for the first time to the best of our knowledge, the cross relaxation parameter of Tm(3+) ions in tellurite glasses over a wide range of concentrations: from 0.36 mol% up to 10 mol%. A new measurement approach based on emission spectra monitoring is proposed. This method is very simple and allows to measure even very highly doped samples. The obtained values of cross-relaxation parameter show a linear dependence with respect to dopant concentration over the full investigated interval, suggesting a dipole-dipole interaction process. The measured slope is 1.81x10(-17) cm(3) s(-1) mol%(-1).
authors.affiliation: College of Engineering, Swansea University, Singleton Park, Swansea, UK. m.a.taher@swansea.ac.uk
authors.forename: Masaud
authors.initials: M
authors.lastname: Taher
authors.forename: Hrvoje
authors.initials: H
authors.lastname: Gebavi
authors.forename: Stefano
authors.initials: S
authors.lastname: Taccheo
authors.forename: Daniel
authors.initials: D
authors.lastname: Milanese
authors.forename: Rolindes
authors.initials: R
authors.lastname: Balda
mesh_terms: D003198:Computer Simulation; D004735:Energy Transfer; D005898:Glass / Q000737:chemistry*; D008027:Light; D008956:Models, Chemical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D013691:Tellurium / Q000737:chemistry*; D013932:Thulium / Q000737:chemistry*
chemical_list: D013932:Thulium; C026660:tellurous acid; D013691:Tellurium