Artículos de revistas
Application of standard and modified Judd-Ofelt theories to thulium doped fluoroindate glass
Fecha
1999-05-01Registro en:
Journal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 247, p. 215-221, 1999.
0022-3093
10.1016/S0022-3093(99)00065-4
WOS:000080506900038
2998503841917815
Autor
Univ Ind Santander
Universidade Estadual Paulista (Unesp)
Univ Saarland
CNRS
Institución
Resumen
Fluoroindate glasses of the following compositions: (40-x)InF3-20ZnF(2)-16BaF(2)-20SrF(2)-2GdF(3)-2NaF-xTmF(3) with x = 1,3 mol% were prepared in a dry box under an argon atmosphere. The absorption spectra at room temperature in the spectral range 350-2200 nm were obtained. The spectra obtained for each sample had similar absorption and only the amplitude of the different bands changed as the concentration of Tm3+. The experimental oscillator strengths were determined from the areas under the absorption bands. Using the standard and modified Judd-Ofelt theory, intensity parameters Ohm(lambda) (lambda = 2,4,6) and (lambda = 2,3,4,5,6), respectively for f-f transitions of Tm3+ ions as well as transition probabilities, branching ratios and radiative lifetimes for each band were determined. The results are compared with those of other glasses described in the literature. (C) 1999 Elsevier B.V. B.V. All rights reserved.