TeO2 Substrate
Description
TeO2 crystal is a kind of acoustooptic material with high quality factor. It has good birefringence and optical rotation performance, and the speed of sound propagating along the direction of [110] is slow; if the resolution of the acoustooptic device made of TeO2 single crystal can be improved by an order of magnitude under the same aperture, the response speed is fast, the driving power is small, the diffraction efficiency is high, and the performance is stable and reliable.
Properties
| Density（g/cm3） |
6 |
| Melt point （℃） |
733 |
| Hardness (Mho) |
4 |
| Color |
clarity/colorless |
| Clarity Wave（mm） |
0.33-5.0 |
| Light Transmittance@632.8nm |
>70% |
| Refraction@632.8nm |
ne =2.411 no= 2.258 |
| Thermal Conductivity Coefficient （mW/cm·℃） |
30 |
TeO2 Substrate Definition
TeO2 (tellurium dioxide) substrate refers to a crystalline material commonly used in various applications involving optics, optoelectronics and acoustics. Here are some key points about TeO2 substrates:
1. Crystal structure: TeO2 has a tetragonal crystal structure, and tellurium and oxygen atoms are arranged into a three-dimensional lattice. It belongs to the orthorhombic crystal system.
2. Acousto-optic characteristics: TeO2 is famous for its excellent acousto-optic characteristics, and is suitable for acousto-optic devices such as modulators, deflectors, and tunable filters. When sound waves pass through a TeO2 crystal, it causes a change in the refractive index, which modifies or controls the path of light passing through it.
3. Wide range of transparency: TeO2 has a wide range of transparency, from near ultraviolet (UV) to mid-infrared (IR) regions. It can transmit light from approximately 0.35 μm to 5 μm, enabling its use in a range of optical devices and applications.
4. High sound velocity: TeO2 has a high sound velocity, which means it can efficiently propagate sound waves through the crystal. This property is crucial for realizing high-performance acousto-optic devices with fast response times.
5. Nonlinear optical properties: TeO2 exhibits weak but significant nonlinear optical properties. It can generate new frequencies or modify the properties of incident light through nonlinear interactions. This property has been used in wavelength conversion and frequency doubling applications.
6. Thermodynamic properties: TeO2 has good thermal stability and mechanical strength, enabling it to maintain its properties over a wide temperature range and withstand mechanical stress without significant deformation or degradation. This makes it suitable for high-power acousto-optic devices.
7. Chemical stability: TeO2 is chemically stable and resistant to common solvents and acids, ensuring its durability and reliability under various operating conditions and environments.
TeO2 substrates are widely used in applications such as acousto-optic modulators, deflectors, tunable filters, optical switches, frequency shifters, and laser beam steering systems. It combines excellent acousto-optic and nonlinear optical properties, wide transparency range, good thermal and mechanical stability, and chemical resistance, making it a versatile material in optics and optoelectronics.
