ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
ANHUI CRYSTRO CRYSTAL MATERIALS CO., LTD. INNOVATOR FOR MAGNETO OPTICAL CRYSTALS
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Terbium Gallium Garnet (TGG) Crystal Used for Faraday Isolators and Rotators
Description:
The magneto-optical crystal TGG crystal is an optimum material for Faraday devices (Rotator and Isolator) in the wavelength range 400 nm-1100 nm, excluding 470-500 nm. TGG crystal 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.
Features:
Large Verdet Constant (35 Rad T-1m-1);
Low optical losses (<0.1%/cm);
High thermal conductivity (7.4W m-1K-1);
High laser damage threshold (>1GW/cm2).
Applications:
Faraday Rotator;
Optical Isolator.
Properties:
| Chemical Formula | Tb3Ga5O12 |
| Lattice Parameter | a=12.355Å |
| Density | 7.13 g/cm3 |
| Mohs Hardness | 8 |
| Melting Point | 1725 ℃ |
| Refractive Index | 1.954 @ 1064 nm |
| Thermal Conductivity | 9.4 x 10-6C-1 |
| Verdet Constant | 0.12 min/Oe.cm @ 1064 nm |
Specifications:
| Orientation | [111] within ±15 arc min |
| Wave Front Distortion | < λ/8 wave |
| Extinction Ratio | > 30dB |
| Diameter | +0.00mm/-0.05mm |
| Length | +0.2mm/-0.2mm |
| Chamfer | 0.10mm @ 45° |
| Flatness | < λ/10 wave @ 633nm |
| Parallelism | < 30 arc Seconds |
| Perpendicularity | < 5 arc min |
| Surface Quality | 10/5 Scratch/Dig |