Tellurite And Fluorotellurite Glasses For Active And Passive

6. Optical properties; MDO 187
Absorption coefficient / cm -1
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Baseline: y=[(1560/x)^4]+0.53
Chi^2 = 0.00053
R^2 = 0.98554
y0 -0.0217±0.003
xc1 2257.27503 ±3.64111
w1 313.39679 ±8.99033
A1 77.1883 ±3.13604
xc2 2895.4632 ±8.86365
w2 436.90631 ±12.83025
A2 310.28144 ±12.75907
xc3 3283.20652 ±12.19985
w3 337.23446 ±13.63704
A3 107.22843 ±13.21737
Wavelength / µm
5.5 5.0 4.5 4.0 3.5 3.0
2000 2500 3000 3500
Wavenumber / cm -1
FTIR data
Gaussian fit
Strong OH (2257 cm -1 )
Weak OH (2895 cm -1 )
Free OH (3283 cm -1 )
Fig. (6.9): Gaussian deconvolution of OH bands in glass MOD010 (75TeO2-10Na2O-
10ZnO-5PbO mol. %).
Absorption coefficient / cm -1
1.0
0.8
0.6
0.4
0.2
0.0
Baseline: y=[(1630/x)^4]+0.275
Chi^2 = 0.00025
R^2 = 0.99652
y0 -0.02632 ±0.00212
xc1 2255.21237 ±1.51875
w1 255.82448 ±2.72194
A1 86.2308 ±1.1981
xc2 3299.34084 ±2.42576
w2 288.15899 ±8.65519
A2 90.65564 ±8.55859
xc3 2950.0471 ±5.09582
w3 547.74903 ±7.53174
A3 533.7025 ±10.90346
Wavelength / µm
5.5 5.0 4.5 4.0 3.5 3.0
2000 2500 3000 3500
Wavenumber / cm -1
FTIR data
Gaussian fit
Strong OH (2255 cm -1 )
Weak OH (2950 cm -1 )
Free OH (3299 cm -1 )
Fig. (6.10): Gaussian deconvolution of OH bands in glass MOD012 (75TeO2-10Na2O-
10ZnO-5GeO2 mol. %).
800
700
600
500
400
300
200
100
0
1000
800
600
400
200
0
Loss / dB.m -1
Loss / dB.m -1