2 Inch GSGG Gd3 ( Sc2Ga3 ) O12 Crystal Substrate Material SGGG CaMgZr GGG TGG
The chemical formula is Gd3Ga5O12 crystal. It belongs to the cubic crystal system. Nd∶GGG doped with Nd is an excellent laser crystal, which can obtain pulsed laser output at room temperature with a wavelength of 1.06331m.
Crystal Substrates Gallium Gadolinium Garnet Gd3SC2Ga3O12 GSGG single crystal
GSGG stands for Vanadium Garnet. It is a special substrate for magneto-optical thin film. In optical communication equipment, 1.3u and 1.5u optical isolators need to be extensively used, whose core components are YIG or BIG films placed in magnetic fields. GGG single crystal substrate with different tangential directions can achieve the best match with the lattice of this kind of magneto-optical material, so as to ensure the successful epitaxial growth of YIG and BIG films. GGG good physical mechanical properties and chemical stability also ensure the film preparation process of the substrate requirements. GGG is also the best substrate for microwave isolators.
Feature Crystal Substrates GSGG crystal
| good optical, mechanical, and thermal properties |
| the best substrate for an infrared optical isolator |
| good substrate for microwave isolator |
Crystal Substrates GGG crystal
| Chemical formula | Gd3Ga5O12 |
| Crystal structure | cubic |
| Lattice parameters, Å | a = 12.383 Å |
| Molecular Weight | 1012.5 |
| Density, g/cm3 | 7.08 g/cm3 |
| Transmission Range | 0.40 ~ 7.0 µm |
| Refractive index | 1.97 @480nm, |
| Melting Point | 1730°C |
| Thermal conductivity at 25°C, W x cm-1 x °K-1 | 7.05 |
| Thermal expansion coefficient | 8.2×10-6 /K |
| Dielectric Constant | 30 |
| Dielectric loss tangent, at 10 GHz | 0.15 |
| Colour |
Colorless |
Crystal Substrates GSGG crystal
| Stucture: | Cubic system |
| Lattice constant: | 12.554A |
| Purity: | 99.99% |
| Density: | 7.09 g/cm3 |
| Melting point: | 1750C |
| Hardness: | 7.5 mohs |
| Refractive index: | 1.95 |
| Dielectric constant: | 30 |
| Growth method: | CZ |
| Conventional crystal direction: | <111>+0.5 |
| Regular size: | 10x10x0.5mm: 10x5x0.5mm:5x5x0.5mm |
| Polishing condition: | DSP or SSP |
| Polishing surface roughness: | <5A |
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