TeO2 (Tellurium Dioxide) Crystal is one of the most prevalent Acousto-Optic (AO) mediums for manufacturing Acousto-Optic modulation components, which could also be alternatively called Bragg Cells(e.g. Acouto-Optic Modulators, Acousto- Optic Tunable Filters, Acousto-Optic Deflectors). The working principle of AO crystals is that these optically anisotropic crystals, with substantially large photoelastic coefficients, exhibits alternation of their refractive index, where the crystals, could be regarded as sinusoidal gratings that cause the incident light to diffract on its internal structural planes formed by atoms.
TeO2 Crystal, pertaining to the tetragonal system with uniaxial configuration, features great acousto-optic properties. Hangzhou Shalom EO offers TeO2 crystals in the form of crystal ingots or boules with inspection polishing, laser-grade-polished and coating-finished crystal components, and TeO2 crystal blanks. The crystals are of an impressively high figure of merits( (M2=793 x 10^-18S^3/kg), which contributes to wide optical bandwidth from the Visible spectrum to the Near IR spectrum, and optimized diffraction efficiency to yield the maximum extinction ratio possible. The Acousto-Optic Modulators made of Shalom EO’s TeO2 crystals could have a resolution that is several times the magnitude of the AOM made from other AO materials given that the apertures are the same. Other advantages of TeO2 include fast rise time, slow shear wave propagation in the <110> orientation and moderate driver power requirements.
Features:
- High figure of merit(M2=793 x 10^-18S^3/kg)
- High refractive index (no=2.274, ne=2.430@633nm)
- High optical activity (20-500deg./mm)
- Broad optical transmission range: 350-5000nm
- Large size capability
Applications:
- AOM (Acousto-Optic Modulators)
- AODF (Acousto-Optic Deflectors)
- AOTF (Acousto-Optic Tunable Filters) and PCAOM (Poly-Chromatic Acousto-Optic Modulators)
- FCAOM (Fiber-Coupled Acousto-Optic Modulator) for telecommunications