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Two series of silica glasses [(95.9−x)SiO2–4Al2O3–xP2O5–0.1Yb2O3 (in mol%, x=0–10) and (92−y) SiO2–4Al2O3–4P2O5–yYb2O3 (in mol%, y=0–0.2)] were prepared by sol–gel method combined with high-temperature sintering. The relationship between the glass structure and spectroscopic properties is investigated. Significant alterations in density, refractive index, absorption and emission cross sections, fluorescence...
Yb 3+ /Al 3+ -co-doped silica glasses with different F − content were prepared in this work by sol–gel method combined with high temperature sintering. XRF, FTIR and XPS methods were used to confirm the presence of F − . The effects of F − on the optical and spectroscopic properties of these glasses have been investigated. It is worth to notice that the F ...
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