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Spectroscopic properties of the 1.4 µm emission of Tm3+ ions in TeO2-WO3-PbO glasses

AuthorsBalda, Rolindes ; Lacha, L. M.; Fernández, Joaquín ; Arriandiaga, M. A.; Fernández Navarro, José María ; Muñoz-Martín, David
Keywords[OCIS] Lasers and laser optics: Laser materials
[OCIS] Materials: Rare-earth-doped materials
[OCIS] Spectroscopy: Spectroscopy, fluorescence and luminescence
Issue Date24-Jul-2008
PublisherOptical Society of America
CitationOptics Express 16(16): 11836-11846 (2008)
AbstractIn this work, we report the spectroscopic properties of the infrared 3H4→3F4 emission of Tm(3+) ions in two different compositions of glasses based on TeO2, WO3, and PbO for three Tm2O3 concentrations (0.1, 0.5, and 1 wt%). Judd-Ofelt intensity parameters have been determined and used to calculate the radiative transition probabilities and radiative lifetimes. The infrared emission at around 1490 nm corresponding to the 3H4 → 3F4 transition has two noticeable features if compared to fluoride glasses used for S-band amplifiers. On one hand, it is broader by nearly 30 nm, and on the other, the stimulated emission cross section is twice the value for fluoride glasses. Both the relative intensity ratio of the 1490 nm emission to 1820 nm and the measured lifetime of the 3H4 level decrease as concentration increases, due to the existence of energy transfer via cross-relaxation among Tm(3+) ions. The analysis of the decays from the 3H4 level with increasing concentration indicates the presence of a dipole-dipole quenching process assisted by energy migration.
Description11 pages, 6 figures.-- OCIS codes: 140.3380, 160.5690, 300.6280.-- Printed version published on Aug 4, 2008.-- © 2008 Optical Society of America.
Publisher version (URL)http://dx.doi.org/10.1364/OE.16.011836
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