8 research outputs found
Absorption and emission spectra of Ga<sub>1.7</sub>Ge<sub>25</sub>As<sub>8.3</sub>S<sub>65</sub> glasses doped with rare-earth ions
No full textOxidative stress and changes in swimming performances at zebrafish model (Danio Rerio H. 1822) produced by acute exposure to deltamethrin
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No full textAcces full text: https://doi.org/10.1117/12.757919The visible luminescence from Pr3+, Dy3+, Nd3+, Sm3+ and codoped with Ho3+ and Dy3+ ions embedded in Ga0.017Ge0.25As0.083S0.65 glass hosts at room temperature and at T=10 K is reported, when pumping with an Ar+-ion laser at λ=488 nm. Fluorescence emissions at 1.3 μm was observed for Dy3+ and both at 1.3 and at 1.5 μm for Pr3+ doped glasses with wavelength pumping at 950 nm. Energy transfer from Ho3+:5F3 level to Dy3+:4F9/2 level increase the visible emission efficiency at 650 nm in the codoped glasses. The investigated Ga0.017Ge0.25As0.083S0.65 glasses doped with Pr3+ are promising amplifier materials for 1.3 and 1.5 μm fiber optic telecommunication windows
