TGG

Terbium Gallium Garnet (Tb3Ga5O12, TGG) is a high performance magneto-optical crystal in the visible and infrared spectral range. TGG crystal possesses a high Verdet constant, low absorption coefficient, high thermal conductivity, high laser damage threshold and excellent optical quality. All these merits make TGG crystal suitable for constructing the Faraday effect devices and make up for the deficiency of YIG crystal in the visible and near infrared spectral regions. TGG crystal has aroused widespread concern as an ideal magneto-optical material for the optical isolators of fiber laser devices in the visible and infrared regions.

CasCrysTech (CCT) provides high quality Terbium Gallium Garnet (Tb3Ga5O12, TGG) crystal which can be customized upon customer's requirements.





Uses/Applications

TGG crystal is suitable for constructing the Faraday effect devices and make up for the deficiency of YIG crystal in the visible and near infrared spectral regions.
TGG crystal has aroused widespread concern as an ideal magneto-optical material for the optical isolators of fiber laser devices in the visible and infrared regions.

Features/Benefits

TGG crystal possesses a high Verdet constant, low absorption coefficient, high thermal conductivity, high laser damage threshold and excellent optical quality.

  • Molecular Formula

    Tb3Ga5O12

    Lattice Constant

    a=12.355 Å  

    Growth Method

    Czochralski

    Melting point

    1725℃

    Density

    7.13 (g/cm3)

    Mohs Hardness

    8(mohs)

    Refractive Index

    1.954 @1064nm

    Verdet Constant

    0.12min/Oe.cm   at1064nm

    Orientation

    <111>within 0.5 degrees

    Wavefront Distortion

    <1/8 wave total at 633nm

    Extinction Ratio

    >30dB

    Dimension

    Diameter

    +0.00mm/-0.05mm


    Length

    ±0.2mm

    Chamfer

    0.13mm(+0.00mm,-0.08mm)  at 45°±5°

    Processing parameters

    Flatness

    <1/10 wave at 633nm

    Parallelism

    <1 minutes of arc

    Verticality

    <1  degree

    S/D

    20/10

    Package

    Class 100 clean bag, Class 1000 super clean room


  • Dimension

    Diameter+0.00mm/-0.05mm


    Lengt

    ±0.2mm