Abstract
Several properties of TeO2 – MoO3 – La2O3 glasses were studied. The glass-forming region in the TeO2 – MoO3 – La2O3 system covers the composition range from 7 to 78 mol.% TeO2, from 7 to 78 mol.% MoO3 and from 0 to 30 mol.% LaO1.5. Optical transmission of glasses was investigated in the wavelength range from 450 to 2000 nm. In this spectral region, the bands of Mo+5 atoms cause the main contribution to light absorption. The presence of these atoms was confirmed by electron paramagnetic resonance method. The specific absorption coefficient attributed to Mo+5 atoms was found (0.009 ± 0.002) cm−1/ppm ((140 ± 30) cm−1/wt.%.) at 990 nm.
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