Crystals Materials
TeO2 Crystals for acousto-optic coordinating filter, acousto-optic deflector, acousto-optic modulator, acousto-optic tunable filter, active Q-switch laser applications
teo2-crystal
  • Small sound attenuation
  • Large sound and light quality factor
  • High figure of merit
  • Surface Quality: 10/5 Scratch/Dig MIL-O-1380A
  • Parallelism: < 10″
  • Perpendicularity: < 5'
  • Clear Aperture: > 90%
  • Surface Flatness: < λ/10 @ 632.8 nm
  • Coating: AR/HR/PR coating upon customer's request
  • Quality Warranty Period: One year

    • Tellurium Dioxide (TeO2, Paratellurite) is an excellent acousto-optic crystal material, it is widely applied in the production of Acousto-optic modulator (AOM), Acousto-optical deflector (AOD), Acousto-optical tunable filter (AOTF), Laser Q-switches, RF spectrum analyzers in laser technology science and optoelectronic technology, because of its high figure of merit ,which depended on high elastic coefficient and high refractive index. TeO2 acousto-optic deflectors are more suitable for acousto-optic effects with high diffraction efficiency, long bandwidth and high beam deflection speed. TeO2 has been widely used to fabricate anomalous acousto-optic devices.

    Specifications of TeO2 Crystal
    Size 3 mm ~ 150 mm or Upon customer request
    Dimension Tolerances ±0.05 mm
    Surface Quality 10/5 S/D
    Parallelism < 10 arcsec
    Perpendicularity < 5 arcmin
    Clear Aperture > 90%
    Wavefront Distortion λ/10 @ 633 nm
    Surface Flatness < λ/10 @ 632.8 nm
    Chamfer < 0.1 mm @ 45°
    Coating AR/HR/PR coating upon customer's request
    Damage Threshold 750mW/cm2 at 1064 nm, TEM00, 10 ns, 10Hz
    Physical and chemical properties
    Property Value
    Chemical formula TeO2
    Molar mass 159.60 g/mol
    Color Colorless
    Density 5.99 ± 0.03 g/cm3
    Melting Point 733°C
    Hardness 3 - 4 on Moh's hardness scale
    Thermal expansion 10-6 K-1: α11 = 17.7; α22 = 17.7; α33 = 5.5
    Symmetry Tetragonal, 422 (D4)
    Lattice distances a = 4.8122 Å; c = 7.6157 Å
    Transmittivity >70% at 633 nm
    Transmitting Range 0.33 ~ 5.0 microns
    Optical Activity, Along [001]
    λ (μm) p (deg/mm) λ (μm) p (deg/mm)
    0.3698 587.1 0.5893 104.9
    0.3783 520.6 0.6328 86.9
    0.3917 437.4 0.7000 67.4
    0.4152 337.6 0.8000 48.5
    0.4382 271.0 0.9000 37.4
    0.4630 221.1 1.00 29.5
    0.4995 171.2 1.10 23.8
    0.5300 143.4

    Stock specification list

    If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
    Part Number Face size Length Application Coating
    TeO2-001 10.0*10.0 mm 4.53 mm Acousto-Optic Modulation UnCoating
    TeO2-001 15.0*14.0 mm 10.0 mm Acousto-Optic Modulation AR@370 nm, T≥92%

    Notes

  • Anti-reflection coatings are available at your specified wavelength.
  • Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
  • To inquiry or order a finished TeO2 laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Nd-dopant concentration, sizes, and coating. For special request, please specify specification in details for evaluation and fabrication.

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