GaAs
Density：5.37g/cm^3
Refractive Index：3.3169@3μm；3.2770@10μm
Transmission：≥55%@3-5μm；≥55%@8-12μm
Resistivity：5×10^7-1×10^8Ω*cm
| Type | Size | Diagonal | Roughness(μm) | Flatness(mm) | Parallelism(mm) |
| Square | Small | 10-25mm | 1.6 | 0.005 | 0.01 |
| Medium | 25-100mm | 1.6 | 0.01 | 0.01 | |
| Large | 100-200mm | 1.6 | 0.02 | 0.01 | |
| Type | Size | Diameter | Roughness(μm) | Flatness(mm) | Parallelism(mm) |
| Circular | Small | φ10-φ25mm | 1.6 | 0.005 | 0.01 |
| Medium | φ25-φ100mm | 1.6 | 0.01 | 0.01 | |
| Large | φ100-φ200mm | 1.6 | 0.02 | 0.01 |
