Crystro Terbium Gallium Garnet TGG Rods Magneto Optical Crystals
D8*15mm Large Verdet Constant TGG (Terbium Gallium Garnet ) Crystal Rods for Faraday Rotator
Introduction :
Terbium Gallium Garnet (TGG) is a kind of synthetic garnet, a magneto-optical crystal with a high level of thermal conductivity for Faraday rotators and isolators.It can be used in optical isolators for laser systems, in optical circulators for fiber optic systems, in optical modulators, and in current and magnetic field sensors.
Basic 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 |
| Verdet (rad/M/T) | 190/134/40@532nm/633nm/1064nm |
Main Advantages :
1. Large Verdet Constant :35 Rad T-1m-1
2. Low Optical Losses : <0.1%/cm
3. High thermal conductivity : 7.4W m-1K-1
4. High laser damage threshold :>1GW/cm2
Crystro TGG rods specification :
We can offer customize TGG crystal sizes upon your request.
| 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--100 mm in diameter |
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