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- W2051256001 abstract "Visible fiber lasers and amplifiers have potential applications in the fields of optical data storage, spectroscopy, biomedical, and optical local area networks. A spectroscopic analysis has been performed on a borosilicate glass, codoped with Tb<sup>3+</sup> and Yb<sup>3+</sup>, to assess this material as a green laser and amplifier medium. The rare-earth ion concentration effect on thermal, absorption, and emission properties of the glasses were investigated using differential scanning calorimetry, UV/VIS/NIR absorption, and luminescence measurements, respectively. These materials were found to have good glass-forming ability, and show a high thermal stability, indicating the potential to facilitate low-loss fiber fabrication. Judd-Oflet analysis was performed for Tb<sup>3+</sup> doped in the borosilicate glasses. The radiative lifetime of the <sup>5</sup>D<sub>4</sub> level was found to be 2.6 ms, and was almost constant in 0.5-15 wt.% concentration range. The peak cross section for stimulated emission by the <sup>5</sup>D<sub>4</sub>-><sup>7</sup>F<sub>5</sub> transition was found to be 0.8×10<sup>-21</sup> cm<sup>2</sup> at λ = 542 nm. In the Tb<sup>3+</sup>-Yb<sup>3+</sup>-codoped glasses, the green emission resulting from the cooperative energy transfer between doped ions was observed under infrared excitation (λ<sub>ex</sub> = 0.98 μm). This upconversion emission increased with doping ion concentration. These results suggested that the Tb<sup>3+</sup>-Yb<sup>3+</sup>-codoped borosilicate glass is a promising candidate for an all-solid-state upconversion green laser and amplifier." @default.
- W2051256001 created "2016-06-24" @default.
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- W2051256001 date "2006-10-01" @default.
- W2051256001 modified "2023-09-25" @default.
- W2051256001 title "Spectroscopic properties of Tb<sup>3+</sup>-Yb<sup>3+</sup>-codoped borosilicate glasses for green lasers and amplifiers" @default.
- W2051256001 doi "https://doi.org/10.1117/12.685507" @default.
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