Tellurite And Fluorotellurite Glasses For Active And Passive
Tellurite And Fluorotellurite Glasses For Active And Passive Tellurite And Fluorotellurite Glasses For Active And Passive
Percentage (%) 70 60 50 40 30 20 10 0 6. Optical properties; MDO 201 Table (6.5): Percentage of OH groups for glasses MOD014 (90TeO2-5WO3-5Nb2O5 mol. %), MOD015 (82.5TeO2-7.5WO3-10Nb2O5 mol. %), and MOD016 (70TeO2-25WO3- 5Bi2O3 mol. %). Glass MOD Strong Weak Free ID OH / % OH / % OH / % 014 64 24 12 015 60 30 11 016 57 34 10 Strong OH Weak OH Free OH OH type MOD014 (5 mol. % WO3) MOD015 (7.5 mol. % WO3) MOD016 (25 mol. % WO3) Fig. (6.25): Percentage of OH groups for glasses MOD014 (90TeO2-5WO3-5Nb2O5 mol. %), MOD015 (82.5TeO2-7.5WO3-10Nb2O5 mol. %), and MOD016 (70TeO2-25WO3- 5Bi2O3 mol. %). From table (6.5) and fig. (6.25), it can be seen that the amount of strong and free OH tended to fall with increasing WO3 content. However, the weakly H-bonded OH did not follow this trend, and increased with WO3. These variations may however be smaller than the error introduced from Gaussian fitting the bands.
6. Optical properties; MDO 202 6.2.1.2. Infrared spectroscopy of fluorotellurite glasses Infrared spectroscopy of series (90-x)TeO2-10Na2O-xZnF2 mol. %, for 5 ≤ x ≤ 30 mol. % Fig. (6.26) shows the infrared spectra of glasses of the series (90-x)TeO2-10Na2O-xZnF2, mol. %, for 5 ≤ x ≤ 30 mol. % (glasses MOF001, 004 to 008). Glass MOD013 (80TeO2- 10Na2O-10ZnO mol. %) was also plotted for comparison. The y-axis was splayed, for presentation purposes and hence the numbers on the y-axis only apply to the 30 mol. % ZnF2 glass. [5]. Absorption coefficient / cm -1 1.50 1.25 1.00 0.75 0.50 0.25 0.00 Wavelength / µm 6 5 4 3 2 Series: 90-xTeO 2 .10Na 2 O.xZnF 2 Oxide: 80TeO 2 -10Na 2 O-10ZnO 2000 3000 4000 5000 6000 7000 Wavenumber / cm -1 Mol. % ZnF 2 0 (oxide) 5 10 15 20 25 30 Fig. (6.26): Infrared spectra of glasses of the series (90-x)TeO2-10Na2O-xZnF2, mol. %, for 5 ≤ x ≤ 30 mol. % (glasses MOF001, 004 to 008). Glass MOD013 (80TeO2-10Na2O- 10ZnO mol. %) plotted for comparison [5].
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6. Optical properties; MDO 202<br />
6.2.1.2. Infrared spectroscopy of fluorotellurite glasses<br />
Infrared spectroscopy of series (90-x)TeO2-10Na2O-xZnF2 mol. %, for 5 ≤ x ≤ 30 mol. %<br />
Fig. (6.26) shows the infrared spectra of glasses of the series (90-x)TeO2-10Na2O-xZnF2,<br />
mol. %, for 5 ≤ x ≤ 30 mol. % (glasses MOF001, 004 to 008). Glass MOD013 (80TeO2-<br />
10Na2O-10ZnO mol. %) was also plotted for comparison. The y-axis was splayed, for<br />
presentation purposes and hence the numbers on the y-axis only apply to the 30 mol. %<br />
ZnF2 glass. [5].<br />
Absorption coefficient / cm -1<br />
1.50<br />
1.25<br />
1.00<br />
0.75<br />
0.50<br />
0.25<br />
0.00<br />
Wavelength / µm<br />
6 5 4 3 2<br />
Series: 90-xTeO 2 .10Na 2 O.xZnF 2<br />
Oxide: 80TeO 2 -10Na 2 O-10ZnO<br />
2000 3000 4000 5000 6000 7000<br />
Wavenumber / cm -1<br />
Mol. % ZnF 2<br />
0 (oxide)<br />
5<br />
10<br />
15<br />
20<br />
25<br />
30<br />
Fig. (6.26): Infrared spectra of glasses of the series (90-x)TeO2-10Na2O-xZnF2, mol. %,<br />
for 5 ≤ x ≤ 30 mol. % (glasses MOF001, 004 to 008). Glass MOD013 (80TeO2-10Na2O-<br />
10ZnO mol. %) plotted for comparison [5].
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