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Tellurium dioxide (TeO2)Crystal is an acousto-optic material with a high quality factor, exhibiting excellent birefringence and optical rotation properties. Acousto-optic devices made from TeO2 single crystals can achieve an order-of-magnitude improvement in resolution, along with advantages such as fast response speed, low driving power, high diffraction efficiency, and stable and reliable performance.TeO2Crystals possess excellent acousto-optic properties, making them ideal materials for manufacturing acousto-optic deflectors, modulators, resonators, and filters.
TeO2Performance parameters of crystals
| Crystal class | Tetragonal |
| Refractive index | ηo=2.81ηe=2.32 |
| Transitivity | ＞70% at 632.8nm |
| Thermal expansion at 293K,1/kParallel to ＜110＞Parallel to ＜001＞ | 19.5×10-66.10×10-6 |
| Acoustic velocities, km/secFor shear wave along ＜110＞For shear wave along ＜001＞ | 0.6174.26 |
| AO figures of meritM1, cm2,sec/g(shear/longitudinal)M2, cm2,sec/g(shear/longitudinal) | （68.6/142）×10-7（1200/34.5）×10-18 |
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences
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