Terbium Gallium Garnet Crystal

Terbium Gallium Garnet (TGG) single crystal has large magneto-optical constant, low light loss, high thermal conductivity and high laser damage threshold. TGG crystal is an essential magneto-optical crystal for Faraday polarizers. Faraday polarizer is composed of the TGG crystal rod and a specially designed magnet. The polarization of the beam through the magneto-optical materials deflexed and direction of the deflection only has some relations with the direction of the magnetic field and has nothing to do with the direction of the beam propagation. An optical isolator is an optical component which allows the transmission of polarized light in only one direction.

Advantages of TGG:

1. Large Verdet constant
2. Low optical losses
3. High thermal conductivity
4. High laser damage threshold

NCE provides Terbium Gallium Garnet (TGG) Crystal upon request. In addition, we can also produce other types of window crystals like CaF₂, MgF₂ Crystals, etc. Please contact us for more details. Get a Quote Now! For other optical materials, please check our Optical Materials category page.

Typical Applications of TGG:

TGG is an excellent magneto-optical crystal used in various Faraday devices (polarizer and isolator) in the range of 400 nm – 1100 nm, excluding 475-500 nm. It is widely used in YAG, Ti-doped sapphire and other multi-stage amplification, ring, seed injection lasers.

Inquiries and orders should include the following information:

1. Quantity
2. Dimensions
3. Crystal orientation
4. Polished or ground finish

Standard Packing: In clean sealed bags. Special package is available on request.