Crystals Materials
TGG Crystal for faraday devices in the range of 400 nm-1100 nm applications
TGG crystal (Terbium Gallium Garnet, Tb3Ga5O12,) is an excellent magneto-optical crystal used in various Faraday devices (Rotators and Isolators) in the range of 400 nm-1100 nm, excluding 475 nm-500 nm.
| Dimension Tolerances | ±0.05 mm |
| Surface Quality | 10/5 S/D |
| Parallelism | < 10 arcsec |
| Perpendicularity | < 5 arcmin |
| Clear Aperture | > 90% |
| Wavefront Distortion | λ/10 @ 633 nm |
| Surface Flatness | < λ/10 @ 632.8 nm |
| Chamfer | < 0.1 mm @ 45° |
| Coating | AR/HR/PR coating upon customer's request |
| Damage Threshold | 750mW/cm2 at 1064 nm, TEM00, 10 ns, 10Hz |
| Property | Value |
|---|---|
| Chemical Formula | Tb3Ga5O12 |
| Lattice Parameter | a=12.355Å |
| Growth Method | Czocralski |
| Density | 7.13g/cm3 |
| Mohs Hardness | 8 |
| Melting Point | 1725 ℃ |
| Refractive Index | 1.954 at 1064nm |
| Crystal Structure | [111] |
| Extinction Ratio (over 2/3 clear aperture) | 30 dB |
| Thermal Conductivity | 7.4 W cm^-1 K^-1 |
| Nonlinear Index, n2 | 8 |
| Figure of Merit, V/a | 27 |
| Figure of Merit, V/n2 | 5 |
| Wavelength | Verdet Constant |
|---|---|
| 632 nm | -134 RadT^-1m^-1 |
| 1064 nm | -40 RadT^-1m^-1 |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
Anti-reflection coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
To inquiry or order a finished TGG laser rod, please specify the specification listed above, for common application, we only need to know the main specification: sizes, and coating. For special request, please specify specification
in details for evaluation and fabrication.
| Part Number | Face size | Length | Coating |
|---|---|---|---|
| TGG-001 | Φ30.0 mm | 3-20 mm | AR@1064 nm |
| TGG-002 | 10.0*10.0 mm | 3-20 mm | AR@1064 nm |
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