Laser Crystal Magneto-Optical Crystal​ TGG

Magneto-Optical Crystal

Terbium Gallium Garnet (TGG) crystal is an excellent magneto-optical crystal used in the range of 400nm-1100nm, excluding 475-500nm. It has a large magneto-optical constant, low light loss, high thermal conductivity and high laser damage threshold. It is widely used in multi-stage amplification, ring type and seed injection lasers such as YAG and Ti-doped sapphire.

Part Number


Chemical Formula


Crystal Structure


Lattice Constant


Melting Point


Density, g/cm3


Mohs Hardness


Magneto-optical Constant


Transmission Loss

< 0.1%/cm

Thermal Conductivity

7.4 W/m·K

Laser Damage Threshold


Refractive Index

1.954 (1064nm)

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