Substituted Gadolinium Gallium Garnet SGGG Optical Substrate - 3 Inch Diameter, 7.09 g/cm³ Density for Magneto-Optical Films
MOQ:
1pc
Delivery Time:
4-5weeks
Brand:
Crystro
Product Description
Substituted Gadolinium Gallium Garnet (SGGG) Optical Substrate
GGG is a specialized substrate for magneto-optical films used extensively in optical communication equipment. These substrates enable successful epitaxial growth of YIG and BIG films for 1.3 and 1.5 micron optical isolators, with excellent physical, mechanical, and chemical stability for film preparation processes.
Key Material Properties
Crystal Properties
| Property | Specification |
|---|---|
| Crystal Growth Method | Czochralski |
| Crystal Growth Orientation | (100), (111) |
| Maximum Size | 3 inch diameter |
| Variations | Dopants on request |
Crystallographic Properties
| Property | Specification |
|---|---|
| Crystallographic Structure | Cubic |
| Lattice Parameter (GGG) | a = 12.383 Å |
| Lattice Parameter (SGGG) | a = 12.505 Å |
| Mineralogical | Garnet |
| Twinning Structure | Perfect |
| Color | Colorless / Brownish SGGG |
Physical Properties
| Property | Specification |
|---|---|
| Density | 7.09 g/cm³ |
| Melting Point | 1730 °C |
| Hardness | 7.5 (Mohs) |
| Dielectric Constant | 30 |
| Dielectric Loss Tangent (10 GHz) | ca. 3.0 × 10⁻⁴ |
Optical Properties
| Property | Specification |
|---|---|
| Transmission Range | 0.3 to 7.0 μm |
| Refraction Index (577 nm) | nd = 1.9708 |
| Refraction Index (625 nm) | ne 1.9567, nc 1.9577 |
| Refraction Index (2000 nm) | ne 1.9567, nc 1.9500 |
| Refraction Index (5000 nm) | ne 1.9567, nc 1.9454 |
Technical Specifications
| Parameter | Specification |
|---|---|
| Orientation | <111> <100> within ±15 arc min |
| Wave Front Distortion | <1/4 wave@632 |
| Diameter Tolerance | ±0.05mm |
| Length Tolerance | ±0.2mm |
| Chamfer | 0.10mm@45º |
| Flatness | <1/10 wave at 633nm |
| Parallelism | < 30 arc Seconds |
| Perpendicularity | < 15 arc min |
| Surface Quality | 10/5 Scratch/Dig |
| Clear Aperture | >90% |
| Large Dimensions of Crystals | 2.8-76 mm in diameter |
Applications
Optical Communication
Core component for 1.3 and 1.5 micron optical isolators in communication equipment
Liquid Epitaxy
Dedicated substrates for magneto-optical film epitaxial growth
Magneto-Optical Devices
Substrates for YIG and BIG magneto-optical films
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Company
ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
Location
No. 176, Yuner Rd, Yunhai Rd Industrial Park, Baohe District，Hefei City，Anhui Province
Contact Person
Wu