TGG (Terbium gallium garnet) – Magneto-optic Crystal – Customized Products
TGG crystal is also known as terbium gallium garnet crystal, with the chemical formula Tb3Ga5O12. It is a magneto-optical crystal with good comprehensive properties.
TGG crystal has a high magneto-optical constant, low optical loss, high thermal conductivity, and a high laser damage threshold. TGG single crystal is the best magneto-optical material for Faraday polarizer and isolator, and the applicable wavelength is 400~1100 nm (excluding 470~500 nm).
TGG (terbium gallium garnet) single crystal has a very high Verdet constant in the range of 4oonm-11oonm (excluding 475-5oonm), which is the best and most widely used magneto-optical material in Faraday rotators and isolators.
By placing the rod of this material in a strong magnetic field, the Faraday rotation angle of more than 45 °C can be achieved. This allows the construction of a Faraday rotator as the main component of the Faraday isolator, which transmits light in only one direction.
Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.
Features of TGG crystal:
High damage threshold
Low optical loss
High thermal conductivity
Large Verdet constant
Specification
Wavefront Distortion | ﹤λ/8 @632.8nm |
Size Tolerance | Diameter:+0.0/-0.05 mm, Length:±0.2mm |
Extinction Ratio | ﹥30dB |
Surface Quality | 10/5 |
Parallelism | ﹤10″ |
Perpendicularity | ﹤5′ |
Clear Aperture | ﹥90% |
Surface Flatness | ﹤λ/10 @632.8nm |
Size | According to customer requirements |
Coating | Anti-reflective film can be made according to customer requirements |
Physical and Chemical Properties
Attribute | Numerical |
Chemical Formula | Tb3Ga5O12 |
Lattice Constant | a=12.355Å |
Growth Way | Pulling Method |
Density | 7.13g/cm3 |
Mohs Hardness | 8 |
Melting Point | 1725℃ |
Refractive Index | 1.954@1064nm |
Extinction Ratio | 30dB |
Thermal Conductivity | 7.4 W cm-1k-1 |