Almaz Optics, Inc.
12 Chadsford Ct.  Marlton, NJ 08053, USA
Tel:  856 797-0491, Fax: 856 797-0228
e-mail: mail@almazoptics.com

 

































Tellurium Dioxide (TeO2)

Tellurium Dioxide Crystal is commonly used in acousto-optical devices. This material features high optical homogeneity, low light absorption and scattering, and high optical power capability.
Maximum available size: Dia 50 mm x 60 mm long.
Finished components can be supplied with antireflection coating (R , 0.2% for single wavelength coating, <0.5% for broadband coating for 400-800 nm range).


Main Properties

Chemical Formula

TeO2

Molecular Weight 159.61
Crystal Class

Tetragonal

Density, g/cm3 at 293 K

6.00

Melting Temperature, K 1006
Hardness (Mohs) 4
Solubility in water None
Color Clear
Transmittance Range, mm 0.33-5.0
Thermal Expansion at 293K, 1/K
normal to <001>
parallel to <001>

19.5 x 10-6
6.10 x 10-6
Thermal Conductivity, mW/cm K 30
Mechanical Impedance, kg/m sec

3.6 x 106

Acoustic Velocities, km/sec
for shear wave along <110>
for longitudinal wave along <001>

0.617
4.26
Acoustic attenuation at 500 MHz, dB/cm
for shear wave along <110>
for longitudinal wave along <001>
2.3
AO Figure of Merit M2, sec3/g
Slow shear mode along <110>
Longitudinal mode along <001>


1200 x 10-18
34.5 x 10-18

 

Transmission

Refractive Indices at 293K

l, 0.4765 0.4880 0.4965 0.5017 0.5145 0.5321 0.6328 1.0642 1.152
no 2.3394 2.3297 2.3232 2.3194 2.3107 2.3001 2.2585 2.2005 2.1955
ne 2.5064 2.4951 2.4874 2.4829 2.4727 2.4602 2.4114 2.3431 2.3373

Elastic Stiffness at 293K, (x 1011 dyne/cm2)

C11 C12 C13 C33 C44 C66
5.32 4.86 2.12 10.85 2.44 5.52
5.6 5.16 2.72 10.51 2.70 6.68

Photoelastic Constants for 632.8 nm at 293K

P11 P12 P13 P31 P33 P66 P44
0.0074 0.187 0.340 0.090 0.240 -0.0463 -0.044