Tellurite And Fluorotellurite Glasses For Active And Passive

6. Optical properties; MDO 192
Absorption coefficient / cm -1
90
80
70
60
50
40
30
20
10
11 10 9 8 7 6
1070 cm -1
9.35 µm
Wavelength / µm
1210 cm -1
8.26 µm
1370 cm -1
7.30 µm
0
900 1000 1100 1200 1300 1400 1500 1600 1700
Wavenumber / cm -1
1550 cm -1
6.45 µm
Fig. (6.14): Absorption bands seen in multiphonon edge for 0.20 mm thick sample of
glass MOD013 (80TeO2-10Na2O-10ZnO mol. %).
Fig. (6.15) shows the infrared spectra of the mid- and near-infrared regions for glasses of
composition 80TeO2-10Na2O-10ZnO mol. %, performed on samples of varying thickness
(2.98, 0.50 and 0.20 mm).