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Proceedings Paper

Concentration quenching of the 1470-nm emission in Tm3+-doped lead-niobium-germanate glasses
Author(s): Rolindes Balda; Luis M. Lacha; Joaquin M. Fernandez; Jose M. Fernandez-Navarro
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Paper Abstract

In this work, we have studied the concentration quenching of the 3H43F4 emission of Tm3+ doped lead-niobium-germanate glasses (GeO2-PbO-Nb2O5) for different Tm3+ concentrations (0.1, 0.2, 0.5, 1, 2, and 3 wt%). The emission spectra obtained under 798 nm excitation reveal the existence of energy transfer via cross-relaxation among Tm3+. As a result, the intensity of the infrared 3H43F4 emission at 1474 nm decreases in relation to that of the 1820 nm emission as concentration increases. The non-exponential character of the decays from the 3H4 level with increasing concentration, together with the dependence of the effective decay rates on Tm3+ concentration, indicate the presence of a dipole-dipole quenching process in the framework of a diffusion-limited regime.

Paper Details

Date Published: 4 April 2005
PDF: 8 pages
Proc. SPIE 5723, Optical Components and Materials II, (4 April 2005); doi: 10.1117/12.588546
Show Author Affiliations
Rolindes Balda, Escuela Superior de Ingenieros (Spain)
Unidad Fisica de Materiales CSIC-UPV/EHU (Spain)
DIPC (Spain)
Luis M. Lacha, Escuela Superior de Ingenieros (Spain)
Joaquin M. Fernandez, Escuela Superior de Ingenieros (Spain)
Unidad Fisica de Materiales CSIC-UPV/EHU (Spain)
DIPC (Spain)
Jose M. Fernandez-Navarro, Consejo Superior de Investigaciones Cientificas (Spain)

Published in SPIE Proceedings Vol. 5723:
Optical Components and Materials II
Shibin Jiang; Michel J.F. Digonnet, Editor(s)

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