ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
ANHUI CRYSTRO CRYSTAL MATERIALS CO., LTD. INNOVATOR FOR MAGNETO OPTICAL CRYSTALS
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Magneto-optical Crystal TGG for Faraday Devices ( Rotator and Isolator )
The magneto-optical crystal TGG is an optimum material for Faraday devices (Rotator and Isolator) in the range from 400nm-1100nm, excluding 470-500nm.The Faraday rotator consists of a TGG rod contained inside a special designed magnet. The rotation sense of the polarization of a light beam passing through the rotator only depends on the direction of the magnetic field and not on the direction of propagation of the light beam. The optical isolator is a Faraday rotator set between two suitably aligned polarizers which allows a light beam to pass through in one direction only. TGG has a combination of excellent properties such as large Verdet constant, low light loss, high thermal conductance and high light damage threshold which makes it a unique material for Faraday devices particularly suitable for YAG lasers and Ti: sapphire tunable lasers, ring lasers and seed injected lasers.
Features:
Applications:
Faraday Rotator;
Optical Isolator.
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 |