Materials, cilt.17, sa.15, 2024 (SCI-Expanded)
The thermal and optical properties of 60TeO2-20K2TeO3-10WO3-10Nb2O5 (in mol%) glasses doped with Ho2O3, Er2O3, and Tm2O3 were explored in the present work. The thermal stability, refractive index n, extinction coefficient k, absorption coefficient α, and optical band gap of the glasses were evaluated. The UV–Vis–NIR absorption spectra, the Judd–Ofelt intensity parameter, the spectroscopic quality factor, and the emission and absorption cross-sections were calculated to investigate the effects of Er3+ and Tm3+, respectively, on the band spectroscopic properties of Ho3+ ions. The results showed that the maximum emission cross-section was approximately (Formula presented.), and the values of the full width at half maximum ((Formula presented.), quality factor ((Formula presented.), and gain coefficient of Ho3+: 5I7 (Formula presented.) 5I8 were also reported. The value of the (Formula presented.) was (Formula presented.), which showed greater gain characteristics than earlier study results. For (Formula presented.) mid-infrared solid-state lasers, the glasses that were examined might be a good host material.