TGG crystal

TGG crystal, terbium gallium garnet, is the key material of the optical isolator in fiber lasers at present. This material has a magneto-optic constant, low optical loss, high thermal conductivity and high laser damage threshold, and is widely used in YAG, titanium-doped sapphire and other multilevel amplifiers, ring, seed injection lasers, etc. In addition, TGG single crystal is also a magneto-optic material used to make Faraday rotators and isol, with a wavelength of 400-1100 nm (excluding 470-500 nm).

Main advantages:

Large magneto-optic constant (35 Rad T-1m-1). Low transmission loss (<0.1%/cm

High thermal conductivity (7.4W m-1K-1).

High extinction ratio: >35dB, up to 40dB; High laser damage (>1GW/cm2).

Main applications: Faraday rotator, optical isolator, etc.

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