title: Spectral study of the stimulated emission of Nd3+ in fluorotellurite bulk glass.
abstract: In this work we present, for the first time to our knowledge, laser emission under wavelength selective laser-pulsed pumping in Nd(3+)-doped TeO(2)-ZnO-ZnF(2) bulk glass for two different Nd(3+) concentrations. The fluorescence properties of Nd(3+) ions in this matrix which include, Judd-Ofelt calculation, stimulated emission cross-section of the laser transition and lifetimes are also presented. The site-selective emission and excitation spectra along the (4)I(9/2)→(4)F(3/2) absorption band show the inhomogeneous behaviour of the crystal field felt by Nd(3+) ions in this fluorotellurite glass which allows for spectral tuning of the laser output pulse as a function of the pumping wavelength. The emission cross-section obtained from the Judd-Ofelt analysis and spectral data (4.9x10(-20) cm(2)) is in fairly good agreement with the value obtained from the analysis of the laser threshold data (4x10(-20) cm(2)).
authors.affiliation: Departamento de Física Aplicada I, Escuela Superior de Ingeniería, Universidad del País Vasco UPV/EHU, Alda. Urquijo s/n 48013 Bilbao, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Miguel
authors.forename: J
authors.initials: J
authors.lastname: Azkargorta
authors.forename: R
authors.initials: R
authors.lastname: Morea
authors.forename: I
authors.initials: I
authors.lastname: Iparraguirre
authors.forename: J
authors.initials: J
authors.lastname: Gonzalo
authors.forename: J
authors.initials: J
authors.lastname: Fernandez
authors.forename: R
authors.initials: R
authors.lastname: Balda
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005461:Fluorine / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007834:Lasers; D008422:Materials Testing; D009354:Neodymium / Q000737:chemistry*; D013691:Tellurium / Q000737:chemistry*
chemical_list: D005461:Fluorine; D009354:Neodymium; C026660:tellurous acid; D013691:Tellurium