TGG Crystals

  • Chemical Formula: Tb3Ga5O12
  • Lattice Parameter: a=12.355Å
  • Growth Method : Czochralski
  • Density: 7.13g/cm3
  • Mohs Hardness: 8
  • Melting Point: 1725℃
  • Refractive Index: 1.954 at 1064nm
  • Product Detail



    TGG is an excellent magneto-optical crystal used in various Faraday devices (Rotator and Isolator) in the range of 400nm-1100nm, excluding 475-500nm.
    Advantages of TGG:
    Large Verdet constant (35 Rad T-1 m-1)
    Low optical losses (<0.1%/cm)
    High thermal conductivity (7.4W m-1 K-1).
    High laser damage threshold (>1GW/cm2)

    TGG of Properties

    Chemical Formula Tb3Ga5O12
    Lattice Parameter a=12.355Å
    Growth Method Czochralski
    Density 7.13g/cm3
    Mohs Hardness 8
    Melting Point 1725℃
    Refractive Index 1.954 at 1064nm


    Orientation [111]±15′
    Wavefront Distortion λ/8
    Extinction Ratio 30dB
    Diameter Tolerance +0.00mm/-0.05mm
    Length Tolerance +0.2mm/-0.2mm
    Chamfer 0.10mm @ 45°
    Flatness λ/10 @633nm
    Parallelism 30″
    Perpendicularity 5′
    Surface Quality 10/5
    AR coating 0.2%