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- W2041066934 abstract "The radiative transition in Tm<sup>3+</sup>-doped fibre at 1.47 μm (<sup>3</sup>H<sub>4</sub> → <sup>3</sup>F<sub>4</sub>) remains a potential route for designing efficient fibre and waveguide amplifiers for the S-band (1420-1520 nm). The transition however suffers from a long metastable lifetime (5 times longer) than the <sup>3</sup>H<sub>4</sub> level, which means that the <sup>3</sup>F<sub>4</sub> level must be depopulated rapidly for efficient inversion for laser and amplifiers applications. One of the known means so far for depopulation of the lower <sup>3</sup>F<sub>4</sub> level is via co-doping with other rare-earth ions, essential for modest gain. For the Tm<sup>3+</sup> - Ho<sup>3+</sup> and Tm<sup>3+</sup> - Tb<sup>3+</sup> doped tellurite glasses, the IR static and time-resolve fluorescence spectra and the lifetimes of the upper <sup>3</sup>H<sub>4</sub> and lower <sup>3</sup>F<sub>4</sub> lasing levels for 1.47 μm of Tm<sup>3+</sup> were measured. The energy transfer rate and non-radiative transfer efficiency between donors and acceptors are compared. The quenching mechanism has been explained. Both the Ho<sup>3+</sup>and Tb<sup>3+</sup> ions reduce the lifetimes of the upper and lower lasing levels, with Tb<sup>3+</sup> ions proving more effective than the effects observed for Ho<sup>3+</sup> ions." @default.
- W2041066934 created "2016-06-24" @default.
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- W2041066934 date "2006-02-09" @default.
- W2041066934 modified "2023-09-23" @default.
- W2041066934 title "Time resolve spectroscopy and energy transfer in Tm3+- Ho3+and Tm3+- Tb3+doped tellurite glasses" @default.
- W2041066934 doi "https://doi.org/10.1117/12.644715" @default.
- W2041066934 hasPublicationYear "2006" @default.
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