TGG Substrate
Terbium gallium garnet (TGG) is a kind of high performance magneto-optical crystal in the visible and near infrared spectrum, which is widely used in laser technology, optical communication and optical information processing technology. It has high feld constant, low optical absorption coefficient, high laser damage threshold and good optical properties. These excellent properties make TGG crystal an ideal material for magneto-optical isolator.
OST Photonics offers high quality TGG substrates for researchers and industries. Crystal size and thickness can be customized according to your requirements.
Features
Large Verdet Constant
Low optical loss
High thermal conductivity
High laser damage threshold
Applications
Faraday rotator
Optical isolator
Optical information processing technology
Processing Capability
Orientation: <111>, etc.
Dimension: 1”, 2”, 3”, 4”, 5x5mm, 10x10mm, 20x20mm, etc.
Thickness: 0.5mm, 1.0mm, 2mm, 5mm, 10mm, etc.
Available items: wafers, substrates, blanks and customized optics
Specification and Properties of TGG Substrates
Chemical Formula | Tb3Ga5O12 |
Growth Method | Czochralski |
Crystal Lattice Constant | a=12.355 Å |
Melting Point | 1725 ℃ |
Density | 7.13 g/cm3 |
Hardness | 8 Mohs |
Refractive Index | 1.954 @ 1064nm |
Orientation | <111>, etc. |
Orientation Tolerance | ±0.5° or better |
Wavefront Distortion | <λ/8 @ 633 nm |
Extinction Ratio | >30dB |
Dimensions | 1”, 2”, 3”, 4”, 5x5mm, 10x10mm, 20x20mm, etc. |
Dimension Tolerance | ±0.1 mm or better |
Thickness | 0.5mm, 1.0mm, 2mm, 5mm, 10mm, etc. |
Thickness Tolerance | ±0.05 mm or better |
Chamfer | 0.1mm@45º |
Flatness | <λ/10 @ 633 nm |
Parallelism | <1 minute of arc |
Perpendicularity | <1 degree |
Surface Quality | S/D 20/10 |
Package | Class 100 clean bag, Class 1000 super clean room |