Polish Terbium Gallium Garnet TGG Optical Crystal For Faraday Isolator
Crystro Terbium Gallium Garnet TGG Best Optical Crystal For Faraday Isolator
Description:
Highly transparent terbium gallium garnet (Tb3Ga5O12; TGG) single crystal having a large Verdet constant based on the visible and near-infrared region (VIS–NIR) Faraday rotator was grown by Floating Zone (FZ) growth machine. We successfully grew TGG single-crystal rods of 8–10 mm in diameter, which was suitable for the use in optical devices. The crystal showed a full-width at half-maximum as little as 18 arcsec by the X-ray rocking curve measurement.
Features:
- Large Verdet Constant (Typical 35 dB,Up to 40dB)
- Low optical losses (<0.1%/cm)
- High thermal conductivity (7.4W m-1K-1).
- High laser damage threshold (>1GW/cm2).
- Thermal conductivity is an order of magnitude greater than typical glass.
- Optical losses are lower for TGG than Tb-doped glasses
Applications:
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Faraday Rotator;
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Optical Isolator.
-
Magnetic sensor
Main Properties:
| Chemical Formula | TB3Ga5O12 |
| Lattic Parameter | a=12.355Å |
| Growth Method | Czochralski |
| Density | 7.13g/cm3 |
| Mohs Hardness | 8.0 |
| Melting Point | 1725℃ |
| Refractive Index | 1.954 at 1064nm |
CRYSTRO supply TGG crystal with:
| Orientation | [111] within ±15 arc min |
| Wave Front Distortion | <1/8 wave |
| Extinction Ratio | >35dB |
| Diameter Tolerance | +0.00mm/-0.05mm |
| Length Tolerance | +0.2mm/-0.2mm |
| Chamfer | 0.10mm@45º |
| Flatness | <1/10 wave at 633nm |
| Parallelism | < 30 arc Seconds |
| Perpendicularity | < 5 arc min |
| Surface Quality | 10/5 Scratch/Dig |
| AR Coating | <0.2% |
| Large Dimensions of Crystals | 2.0--76 mm in diameter |
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