new material
Sapphire circular window is a high-performance optical component known for its exceptional hardness, superior thermal stability, and outstanding optical clarity. Manufactured from crystalline sapphire (Al₂O₃), it provides excellent scratch resistance, minimal optical distortion, and broad spectral transmission, making it an essential material for laser systems, infrared imaging, aerospace applications, and precision scientific instruments. Its durability and ability to withstand extreme environments ensure long-term reliability in demanding optical applications.
Product Overview
Sapphire circular windows are made from high-purity single-crystal sapphire, offering exceptional hardness, strength, and outstanding optical performance. These windows are commonly used as protective windows for sensors, capable of withstanding high pressure and vibration while protecting optical systems from external environmental disturbances. Sapphire windows are critical in optical systems, particularly in high-energy, high-power laser systems, infrared imaging, and ultrafast lasers.
Key Features
- High Hardness: Sapphire’s extremely high hardness makes it highly resistant to scratches and impacts.
- High Temperature Stability: Sapphire windows maintain stability at high temperatures, resisting deformation or degradation.
- High Transparency: Offers very high transmittance in both visible and infrared light ranges, with transmittance over 90% in the near-infrared and mid-infrared ranges.
- Corrosion Resistance: Sapphire has excellent corrosion resistance to many chemical substances, making it suitable for use in harsh environments.
- High Laser Damage Threshold: Sapphire has a high excitation energy threshold, making it capable of withstanding laser radiation in high-energy laser systems.
- Thermal Shock Resistance: Exhibits good thermal shock performance, suitable for environments with rapid temperature changes.
- Mechanical Strength: With excellent mechanical strength, sapphire can endure significant pressure and vibration.
Applications
- High-Power Laser Systems: Used as a window in high-power laser systems, capable of withstanding high-energy laser outputs.
- Ultrafast Lasers: Ideal for protection windows in ultrafast lasers, ensuring the stable operation of optical systems.
- Infrared Imaging Systems: Used as a key optical element in infrared imaging systems to provide high-quality imaging.
- Spectrometers: Ensures high-precision optical performance in spectrometry instruments.
- Aerospace and Military: Widely applied in aerospace and military optical systems as high-precision optical components.
| Optical Property | Value |
| Transmission Range | 0.2-5 μm |
| Refractive Index (Ne) | 1.7771 |
| Structure | Trigonal crystal system |
| Physical Property | Value |
| Density | 3.98 g/cm³ |
| Melting Point | 2030 ℃ |
| Thermal Conductivity | 25.2 W/(m·℃) |
| Thermal Expansion | 5.66×10⁻⁶ ℃⁻¹ |
| Specific Heat Capacity | 0.7610×10³ J/(kg·℃) |
| Young's Modulus | 34-37 GPa |
| Volume Elasticity Coefficient | 250 GPa |
| Poisson's Coefficient | 0.309 |
| Chemical Property | Value |
| Molecular Weight | 101.96 g/mol |
| Solubility | 98×10⁻⁶ g/L |
| Parameter | Range |
| Diameter Range | 2-300 mm |
| Thickness | 0.12-60 mm |
| Surface Finish | 80-50, 60-40, 40-20, 20-10, 10-5 |
| Surface Accuracy | λ/2, λ/4, λ/8, λ/10 |
| Parallelism | <3' - 30" |
| Aperture Transmission | >90% |
| Coating | Customizable |
