Near-infrared dispersion and spin–orbit interaction of Co doped (80 − x)Sb2O3–20Na2O–xWO3 glasses

•The electron transitions in Co2+ are calculated when x = 10 ÷ 40 mol% WO3.•The spin–orbit Hamiltonian is calculated for the same samples.•The refractive index n is calculated for the Co doped glass (x = 20 mol% WO3).•The damping ratio γ is determined from the experimental Lorentz curve.

The present paper discusses the fact that the absorption spectra of doped with 0.1% Co3O4 glasses with the composition (80 − x)Sb2O3–20Na2O–xWO3 are measured in the spectral region 1200–1400 nm. The optical structure of Co2+ is analyzed and the energies of the electron transitions in the metal ion are determined. The spin–orbit interaction is thoroughly analyzed. The refractive index n is calculated for the examined sample with x = 20 mol% WO3.

Graphical abstractThe calculated and experimental Lorenz curves.Figure optionsDownload full-size imageDownload as PowerPoint slide