Tellurite And Fluorotellurite Glasses For Active And Passive

6. Optical properties; MDO 194
Absorption coefficient / cm -1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Baseline: y=[(1590/x)^4]+0.45
Chi^2 = 0.00008
R^2 = 0.99767
y0 0.00187 ±0.00048
xc1 2257.82319 ±0.47642
w1 235.31403 ±1.0363
A1 61.8435 ±0.40145
xc2 2910.02939 ±2.74629
w2 505.17789 ±3.48049
A2 358.85514 ±3.78988
xc3 3265.15307 ±2.05741
w3 312.84954 ±3.92314
A3 81.39494 ±3.61733
Wavelength / µm
5.5 5.0 4.5 4.0 3.5 3.0
FTIR data
Gaussian fit
Strong OH (2258 cm -1 )
Weak OH (2910 cm -1 )
Free OH (3265 cm -1 )
2000 2500 3000 3500
Wavenumber / cm -1
Fig. (6.16): Gaussian deconvolution of OH bands in glass MOD007 (78TeO2-10Na2O-
12ZnO mol. %).
Absorption coefficient / cm -1
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Baseline: y=[(1570/x)^4]+0.33
Chi^2 = 0.00011
R^2 = 0.99615
y0 0 ±0
xc1 2261.38432 ±1.08347
w1 208.90675 ±2.17886
A1 46.6942 ±0.51201
xc2 2916.60287 ±4.42523
w2 480.60961 ±5.92156
A2 298.9132 ±5.24167
xc3 3262.28566 ±3.32385
w3 284.56526 ±6.47127
A3 65.64121 ±4.89148
Wavelength / µm
5.0 4.5 4.0 3.5 3.0
2000 2200 2400 2600 2800 3000 3200 3400 3600
Wavenumber / cm -1
FTIR data
Gaussian fit
Strong OH (2261 cm -1 )
Weak OH (2917 cm -1 )
Free OH (3262 cm -1 )
Fig. (6.17): Gaussian deconvolution of OH bands in glass MOD013 (80TeO2-10Na2O-
10ZnO mol. %), thickness 2.98 mm.
900
800
700
600
500
400
300
200
100
0
800
700
600
500
400
300
200
100
0
Loss / dB.m -1
Loss / dB.m -1