TSAG crystal

  • Transmittance Range(bulk/uncoated): 400-1600nm
  • Crystal Structure: Cubic,Space group Ia3d
  • Chemical Formula: Tb3Sc2Al3O12
  • Lattice Parameter : a=12.3Å
  • Growth Method: Czochralski
  • Density: 5.91g/cm3
  • Melting Point: 1970℃±10℃
  • Product Detail

    Technical parameter

    TSAG Faraday crystal is an ideal magneto-optical crystal, which is mainly used in the wavelength range of 400-1600 nanometers, namely the visible and infrared bands. TSAG is an indispensable crystal for the next generation of high-power lasers due to its advantages of high constant, good thermal and mechanical properties. Compared with TGG, the Verdet constant at 1064 nm of TSAG is 20 % higher and the absorption is 30 % lower. Recently, the optical and scintillation properties of TSAG (Tb3Sc2Al3O12) crystal was investigated, and capabilities to be used as a scintillator screen was demonstrated.
    Main Features of TSAG:
    •   Large Verdet constant(48radT-1m-1 at 1064nm),about 20% higher than that of TGG;
    •   Low absorption(<3000ppm/cm at 1064nm),about 30% less than that of TGG;
    •   High power compliant;
    •   Low thermally-induced birefringence;
    •   Making the isolator small.
    Main Applications:
    • Faraday Rotator;
    • Optical Isolator.


    Orientation ±15′
    Wavefront Distortion λ/8
    Extinction Ratio 30dB
    Diameter Tolerance +0.00mm/-0.05mm
    Length Tolerance +0.2mm/-0.2mm
    Chamfer 0.1mm @ 45°
    Flatness λ/10 at 633nm
    Parallelism 3′
    Perpendicularity 5′
    Surface Quality 10/5
    AR coating 0.3% @ 1064nm