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Spectroscopic investigation of Tm3+:TeO2–WO3 glass by Hamit Kalaycioglu; Huseyin Cankaya; M. Natali Cizmeciyan; Alphan Sennaroglu; Gonul Ozen is a Materials Science article available to read on EtoBox.

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We studied the spectroscopic characteristics of telluride glass with the host composition (0.85)TeO 2 -(0.15)WO 3 , containing 0.25 and 1.0 mol% thulium oxide (Tm 2 O 3 ). By analyzing the absorption spectra with the Judd-Ofelt theory, the average radiative lifetimes of 30577.5 ms and 1.9570.02 ms were determined for the 3 F 4 and 3 H 4 levels, respectively. Measured fluorescence lifetime of the 3 F 4 level decreased from 218 to 51 ms for the 0.25 and 1.0 mol% Tm 2 O 3 doped samples, respectively, indicating the effect of boosted non-radiative decay at higher doping concentrations. A similar trend was observed for the 3 H 4 level, where the fluorescence lifetime decreased from 1.86 ms to 350 ms at these concentrations. The quenching of the 1460 nm ( 3 F 4 -3 H 4 ) emission in favor of the 1800 nm ( 3 H 4 -3 H 6 ) emission due to cross relaxation was further evident in the fluorescence spectra of the samples. The calculated stimulated emission cross sections (3.7370.1 Â 10 À21 cm 2 at 1460 nm and 6.5770.07 Â 10 À21 cm 2 at 1808 nm) reveal the potential importance of the Tm 3+ :(0.85)TeO 2 -(0.15)WO 3 glass for applications in fiber-optic amplifiers and fiber lasers.

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Author

Hamit Kalaycioglu; Huseyin Cankaya; M. Natali Cizmeciyan; Alphan Sennaroglu; Gonul Ozen

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-2313)

Published

2008

Language

EN

Field

Materials Science (Physical Sciences)