Terbium Gallium Garnet (TGG, Tb₃Ga₅O₁₂) is an excellent magneto-optical crystal used in various Faraday devices (Rotator and Isolator) in the range of 400nm-1100 nm, excluding 475-500 nm.

Main Advantages:
     •  Large Verdet constant (40 rad T^-1 m^-1 @ 1064 nm)
     •  Low optical losses (<0.1% /cm)
     •  High thermal conductivity (4.5 W m^-1 K^-1@ 300K)
     •  High laser damage threshold (>1 GW/cm²)