Tellurium dioxide crystal are widely used as acousto-optic modulators, deflectors and tunable optical filters. Tellurium dioxide is an excellent medium for acousto-optic interaction due to its low acoustic velocity, high index of refraction and large piezooptic constants.

Specifications:

Density (g/cm3)	6
Melting Temperature 亱C)	733
Hardness (Mohs)	4
Color	clear/colorless
Transmittance Range(mm)	0.33-5.0
Transmission @632.8nm	>70%
Refractive index @632.8nm	ne =2.411 no= 2.258
Thermal conductivity(mW/cm∙亱C)	30
Acoustic Velocities(km/sec)	0.617 for shear wave along <110> 4.26 for longitudinal wave along <001>
AO Figure of Merit M2(10-18 sec3/g)	1200 for shear mode along <110> 34.5for longitudinal mode along <001>

ZLX Tech supplies both raw TeO2 crystal and fabricated components of TeO2 with varies size (up to 25亊25亊25mm) and shape: prisms, cube and bench.

The specifications of fabrication can completely fit the requirement of acousto-optic modulators, deflectors and other optical parts. The best ones are: 10-5 for surface quality; 10 arc second for parallism, 兩/10 @ 633nm for plateness , better than 5 arc minute for perpendicularity and better than 1 minute for tolerance of angle.