  The presented work is focused on the optical and magneto-optical
characterization of TeO2-ZnO-BaO (TZB) tellurite glasses. We investigated the
refractive index and extinction coefficient dispersion by spectroscopic
ellipsometry from ultraviolet, 0.193 um, up to mid infrared, 25 um spectral
region. Studied glasses exhibited large values of linear (n632 = 1.91-2.09) and
non-linear refractive index (n2 = 1.20-2.67x10-11 esu), Verdet constant (V632 =
22-33 radT-1m-1) and optical band gap energy (Eg = 3.7-4.1 eV). The materials
characterization revealed that BaO substitution by ZnO leads (at constant
content of TeO2) to an increase in linear and nonlinear refractive index as
well as Verdet constant while the optical band gap energy decreases. Fiber
drawing ability of TeO2-ZnO-BaO glassy system has been demonstrated on
60TeO2-20ZnO-20BaO glass with presented mid infrared attenuation coefficient.
Specific parameters such as dispersion and single oscillator energy, Abbe
number, and first-/ third-order optical susceptibility are enclosed together
with the values of magneto-optic anomaly derived from the calculation of
measured dispersion of the refractive index.
