D5*15mm Terbium Gallium Garnet Single Crystal For Isolator
D5*15mm Terbium Gallium Garnet Single Crystal For Isolator
Introduction :
Terbium gallium garnet crystal (TGG) is a high-performance magneto-optical crystal in the visible and near-infrared spectrum. It is widely used in laser technology, optical communication, and optical information processing technology. It has the characteristics of high Feld constant, low light absorption coefficient, high laser damage threshold, and good optical performance. These good material properties make TGG crystal an ideal material for magneto-optical isolators.
In recent years, the growth of large-size and high-quality TGG crystals has always been a hot research topic in the field of crystal materials. With the unremitting efforts of the professional R&D team, Crystro has successfully grown TGG crystals with a diameter of 100mm in June 2020.
Material Properties :
| Chemical Formula | TB3Ga5O12 |
| Lattice Parameter | a=12.355Å |
| Growth Method | Czochralski |
| Density | 7.13g/cm3 |
| Mohs Hardness | 8.0 |
| Melting Point | 1725℃ |
| Refractive Index |
1.954 at 1064nm |
Main Features :
- Large Size Boule Diameter: up to 4”
- Extinction Ratio Typical: >35 dB High Grade: >40 dB
- Verdet Constant 40 rad/T/m at 1064 nm
- Refractive Index 1.95 at 1064 nm
Crystro TGG rods specification :
We can offer customize TGG crystal sizes upon your request.
| Orientation | [111] within ±15 arc min |
| Wavefront 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 arcmin |
| Surface Quality | 10/5 Scratch/Dig |
| AR Coating | <0.2% |
| Large Dimensions of Crystals | 2.0--100 mm in diameter |
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