Cr:Al2O3
CRYLINK’s Cr:Al2O3 crystal products, also known as Ruby. It is a kind of laser crystal product with excellent comprehensive performance. It is widely used in optics and solid-state lasers. The product has the characteristics of high hardness and obvious dichroism. Can be used in optical glass, watch parts, ruby laser products.
Product Parameters
Chemical Formula | Cr3+:Al2O3 |
Crystal Structure | Hexagonal |
Lattice Constant(Å) | a = 4.748; c = 12.957 |
Crystal System | Trigonal |
Axial Characteristics | Uniaxial |
Growth Method | CZ |
Melting Point | 2040℃ |
Refractive Index | np = 1.759; nm = 1.767 |
Double Refraction | 0.0082 |
Density(g/cm3) | 3.98 |
Mohs Hardness(mohs) | 9 |
Specific Heat Capacity @18°C (Jkg-1K-1) | 761 |
Thermal Conductivity@25°C (Wcm-1K-1) | |
Perpendicular to c-axis | 0.35 |
Parallel to c-axis | 0.33 |
Thermal Expansion Coefficient (20 – 100°C) | |
Perpendicular to c-axis | 4.78×10-6 K-1 |
Parallel to c-axis | 5.31×10-6 K-1 |
| Tuning Range (nm) | 680 – 1100 |
| Pumping Range (nm) | 450 – 532 |
| Absorption Coefficient at 510 nm (cm-1) | 0.5 – 2.5 |
| FOM | >200 |
| Orientation | 90° to c axis |
| Geometry | flat-flat / Brewster |
| Parallelity | 10″ |
| Flatness | 0.2 |
| Orientation Tolerance | < 5° |
| Broadband AR Coatings (%) | < 0.2 |
| Diameter (mm) | (3 – 40) ± 0.1 |
| Length (mm) | (10 – 140) ± 0.5 |
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Ruby, Cr absorption spectrum |
- Hardness is high
- Obvious dichromeity
- Solid lasers
- Watch parts
- Optical glass
