Spectroscopic properties of Yb3+ doped PbO-Bi2O3-Ga2O3 glasses for IR laser applications
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Data
2005-09-01
Autores
Kassab, LRP
Fukumoto, M. E.
Cacho, VDD
Wetter, N. U.
Morimoto, N. I.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
PbO-Bi2O3-Ga2O3 glasses doped with different concentrations of Yb3+ are presented. The spectroscopic properties and laser parameters are calculated and a comparison between different results obtained when calculating the Yb3+ emission cross-section with the reciprocity method and with the Fuchtbauer-Ladenburg formula is presented. The behavior of the near-infrared luminescence is described theoretically by a rate equation and compared with the experimental results. This host doped with Yb3+ is a promising material for laser action at 1019 nm, with properties similar to other known glasses used as active laser media; the emission cross-section of 1.1 x 10(-20) cm(2), the high absorption cross-section (of 2.0 x 10(-20) cm(2)) and a minimum pump intensity of 2.4 kW/cm(2) are interesting properties for short pulse generation. (C) 2005 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
glasses, ytterbium, fluorescence
Como citar
Optical Materials. Amsterdam: Elsevier B.V., v. 27, n. 10, p. 1576-1582, 2005.