title: Laser action in Nd(3+)-doped lanthanum oxysulfide powders.
abstract: We have investigated the stimulated emission properties of Nd(3+) doped La(2)O(2)S powders at room temperature as a function of pumping energy density, excitation wavelength, and Nd(3+) ion concentration. The absolute stimulated emission energy has been measured. Expressions for the slope efficiencies and lasing thresholds as a function of rare earth concentration and pumping wavelengths, which qualitatively agree with experimental observations, are discussed.
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: Iñaki
authors.initials: I
authors.lastname: Iparraguirre
authors.forename: Jon
authors.initials: J
authors.lastname: Azkargorta
authors.forename: Odile
authors.initials: O
authors.lastname: Merdrignac-Conanec
authors.forename: Mohamad
authors.initials: M
authors.lastname: Al-Saleh
authors.forename: Christophe
authors.initials: C
authors.lastname: Chlique
authors.forename: Xianghua
authors.initials: X
authors.lastname: Zhang
authors.forename: Rolindes
authors.initials: R
authors.lastname: Balda
authors.forename: Joaquín
authors.initials: J
authors.lastname: Fernández
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007811:Lanthanum / Q000737:chemistry*; D007834:Lasers; D009354:Neodymium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D011208:Powders; D013440:Sulfides / Q000737:chemistry*
chemical_list: D010087:Oxides; D011208:Powders; D013440:Sulfides; D009354:Neodymium; C103829:lanthanum oxide; D007811:Lanthanum