CG MATERIAL
Sapphire Windows, Al2O3
Sapphire Windows, Al2O3
High-Purity Optical Sapphire Windows for Semiconductor, Laser, Vacuum, and High-Temperature Applications
Sapphire windows are manufactured from single-crystal aluminum oxide (Al₂O₃), combining excellent optical transmission, exceptional hardness, and superior thermal stability. Compared with glass and quartz, sapphire windows offer significantly higher strength, scratch resistance, and service life in demanding environments.
CG Material supplies custom sapphire windows in various sizes, thicknesses, and surface finishes for industrial and scientific applications.
Sapphire Windows Specifications
| Property | Value |
|---|---|
| Material | Single Crystal Al₂O₃ |
| Purity | 99.99% |
| Density | 3.97 g/cm³ |
| Hardness | Mohs 9 |
| Refractive Index | 1.76 |
| Thermal Conductivity | 35–42 W/m·K |
| Melting Point | 2053°C |
| Transmission Range | 0.15–5.5 μm |
Applications of Sapphire Windows
Semiconductor Processing
Used in plasma chambers, deposition equipment, etching systems, and wafer processing tools.
Laser Systems
Ideal for high-power laser transmission and protective optical windows.
Aerospace
Used in infrared sensors, guidance systems, and harsh-environment optical assemblies.
Vacuum Chambers
Provides durable optical viewing ports for vacuum and ultra-high vacuum systems.
High-Temperature Furnaces
Suitable for observation windows and monitoring ports in high-temperature processing equipment.
Analytical Instruments
Used in spectroscopy, optical diagnostics, and scientific research equipment.
Medical Devices
Applied in imaging systems, diagnostic instruments, and precision optical assemblies.
Custom Manufacturing Capabilities
CG Material can provide:
- Custom diameters and dimensions
- Precision optical polishing
- AR coatings
- Vacuum-grade sapphire windows
- High-pressure sapphire windows
- UV-grade sapphire windows
- IR-grade sapphire windows
- Custom edge profiles
- Tight tolerance machining
Drawings and specifications are welcome.
FAQ
What is a sapphire window?
A sapphire window is a transparent optical component manufactured from single-crystal sapphire (Al₂O₃) that provides excellent optical transmission and exceptional durability.
What wavelengths can sapphire transmit?
Sapphire typically transmits light from approximately 150 nm in the UV range to around 5.5 μm in the infrared range.
Can sapphire windows withstand high pressure?
Yes. Sapphire's high strength makes it one of the preferred materials for high-pressure optical windows.
