title: Spontaneous and stimulated emission spectroscopy of a Nd(3+)-doped phosphate glass under wavelength selective pumping.
abstract: The influence of the host matrix on the spectroscopic and laser properties of Nd(3+) in a K-Ba-Al phosphate glass has been investigated as a function of rare-earth concentration. Site-selective time resolved laser spectroscopy and stimulated emission experiments under selective wavelength laser pumping show the existence of a very complex crystal field site distribution of Nd(3+) ions in this glass. The peak of the broad stimulated (4)F(3/2)→(4)I(11/2) emission shifts in a non monotonous way up to 3 nm as a function of the excitation wavelength. This behavior can be explained by the relatively moderate inter-site energy transfer among Nd(3+) ions found in this system and measured by using fluorescence line narrowing spectroscopy. The best slope efficiency obtained for the laser emission was 40%.
authors: Departamento de Fisica Aplicada I, Escuela Superior de Ingenieria, Universidad del Pais Vasco UPV/EHU, Alda. Urquijo s/n 48013 Bilbao, Spain.
authors: I
authors: I
authors: Iparraguirre
authors: J
authors: J
authors: Azkargorta
authors: R
authors: R
authors: Balda
authors: K
authors: K
authors: Venkata Krishnaiah
authors: C K
authors: CK
authors: Jayasankar
authors: M
authors: M
authors: Al-Saleh
authors: J
authors: J
authors: Fernández
mesh_terms: D004735:Energy Transfer; D005898:Glass / Q000737:chemistry*; D007834:Lasers; D008027:Light; D008674:Metals, Rare Earth / Q000737:chemistry; D009354:Neodymium / Q000032:analysis*; D055620:Optical Phenomena; D010710:Phosphates / Q000032:analysis*; D013050:Spectrometry, Fluorescence / Q000379:methods*
chemical_list: D008674:Metals, Rare Earth; D010710:Phosphates; D009354:Neodymium