Ruby (Cr:Al₂O₃)
Our Cr:Al₂O₃ crystal, also known as ruby, is a laser crystal with excellent overall performance. It is widely used in optics and solid-state lasers. It features high hardness and pronounced dichroism, and can be used in optical glass, watch components, and ruby lasers.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Chemical formula | Cr³⁺:Al₂O₃ |
| Crystal Structure | hexagonal |
| Lattice constant | a = 4.748; c = 12.957 |
| Crystal system | triangular |
| Axial characteristics | Uniaxial |
| Growth method | CZ |
| Melting point | 2040℃ |
| Refractive Index | nₚ = 1.759; nₘ = 1.767 |
| Birefringence | 0.0082 |
| Density | 3.98 g/cm³ |
| Mohs hardness | 9 mohs |
| Specific heat capacity [@18℃] | 761 J kg⁻¹ K⁻¹ |
| Thermal conductivity [@25°C -perpendicular to the c axis] | 0.35 W cm⁻¹ K⁻¹ |
| Thermal conductivity [@25°C -parallel to the c axis] | 0.33 W cm⁻¹ K⁻¹ |
| Thermal expansion coefficient - perpendicular to the c-axis [20 – 100°C] | 4.78×10⁻⁶ K⁻¹ |
| Thermal expansion coefficient - parallel to the c-axis [20 – 100°C] | 5.31×10⁻⁶ K⁻¹ |
| Tuning range | 680 – 1100 nm |
| Pumping range | 450 – 532 nm |
| Absorption coefficient [@510 nm] | 0.5 – 2.5 cm⁻¹ |
| Orientation | 90° to c axis |
| Geometry | flat-flat / Brewster |
| Parallelism | 10″ |
| Flatness | 0.2 |
| Orientation tolerance | < 5° |
| Broadband AR coating | < 0.2 % |
| Diameter | (3 – 40) ± 0.1 |
| Length | (10 – 140) ± 0.5 |
Applications
Key Features
Datasheet
Supplier Information
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