Product Description
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. Crystro could provide φ4 inch TGG boule.Crystro supplies TSAG-grade TGG.
Main Advantages：
Large Verdet Constant (40 Rad T-1 m-1)
Low optical loss (<0.1%/cm)
High thermal conductivity (7.4W m-1K-1).
High laser damage threshold (>1GW/cm2).
Typical application:
Fiber isolator
Free-space isolator
Faraday rotator
Crystro supplies TSAG-grade TGG
Material Properties
| Chemical Formula | Tb3Ga5O12 |
| Lattice Constant | a=12.355Å |
| Growth Method | Czochralski |
| Density | 7.13g/cm3 |
| Hardness | 8.0 |
| Melting Point | 1725 ℃ |
| Refractive Index | 1.954 @ 1064nm |
Technical Parameter
Crystro offers:
| Orientation | [111] ±15′ |
| Wave Front Distortion | <λ/8 |
| Extinction Ratio | >35dB |
| Diameter Tolerance | +0.00mm/-0.05mm |
| Length Tolerance | +0.2mm/-0.2mm |
| Chamfer | 0.10mm@45º |
| Flatness | <λ/10 @ 633nm |
| Parallelism | < 30" |
| Perpendicularity | < 5' |
| Surface Quality（S/D） | 10-5 |
| Coating | AR, R<0.2% |
| Dimensions | Max Φ101.6 mm (4’inch) |
