Single Crystal: Tellurium Dioxide (TeO2)
Single Crystal: Tellurium Dioxide (TeO2)
Description
Tellurium dioxide (TeO2) is a crystal material that belongs to the family of oxide crystals. TeO2 is a single crystal material, which means that it is composed of a single crystal with a regular arrangement of atoms.
Single crystals like TeO2 have a unique and ordered atomic structure, which gives them unique physical properties such as high optical transparency, thermal stability, and high refractive index. These properties make them useful in various applications, such as in optical devices, waveguides, and acousto-optic modulators.
In particular, TeO2 has attracted interest due to its excellent properties for acousto-optic applications. Acousto-optic devices use sound waves to modulate the properties of light, such as its intensity or direction of propagation. TeO2 has a high acousto-optic figure of merit, which means that it can efficiently convert sound waves into changes in the properties of light. This makes it suitable for use in various acousto-optic devices such as modulators, deflectors, and filters.
TeO2 is also a promising material for use in other applications such as piezoelectric transducers, ultrasonic sensors, and nonlinear optics.
| Material | TeO2 |
| Crystal class | Tetragonal |
| Lattice constant, A | a = 4.796, c = 7.626 |
| Density, g/cm3 | 6.00 |
| Melting point , °C | 733 |
| Mohs hardness | 4 |
| Color | Colorless |
| Transparency range, nm | 0.35 - 5.0 |
| Refractive indices @ 633 nm | no = 2.26, ne = 2.41 |
| Thermal expansion coefficient, 10-6/ °C (@20°C) | aa = 19, ac = 6 |
| Thermal conductivity , mW/cm °C | 30 |
| Dielectric Constant (@ 100 KHz) | ea = 25, ec = 22 |
| Acoustic velocities , km/sec Shear wave propagating along <110> Longitudinal wave propagating along <001> | 0.617 4.26 |
| Acoustic attenuation at 500 MHz , dB/cm Shear wave propagating along <110> Longitudinal wave propagating along <001> | 2.3 |
| Figure of merit M2 , (10-18 sec3/g) Slow shear mode along <110> Longitudial mode along <001> | 1200 34.5 |
| Additional info about A-O properties: | MORE ... |
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