new material
Zinc selenide circular window is a high-performance optical component designed for superior infrared transmission, exceptional chemical stability, and minimal absorption. Manufactured from high-purity ZnSe, it provides outstanding optical clarity, making it an essential material for infrared imaging systems, laser optics, aerospace applications, and precision scientific instruments. Its resistance to thermal fluctuations and environmental degradation ensures long-term reliability in demanding optical environments.
Product Overview
Zinc Selenide (ZnSe) circular windows are widely used in infrared optical systems, particularly in thermal imaging, FLIR (Forward Looking Infrared), and medical systems. ZnSe exhibits low absorption coefficients and high resistance to thermal shock, making it an ideal material for high-power CO2 laser systems. The material provides excellent optical performance in the infrared wavelength range and is commonly used in various infrared optical applications. Although ZnSe has high transparency, it has lower hardness (Vickers hardness of 120) and requires careful handling and protection during use and processing.
Key Features
- High Transparency: ZnSe offers very high transmittance in the infrared wavelength range, making it ideal for optical systems requiring excellent transmission performance.
- Low Absorption Coefficient: With minimal light absorption, ZnSe ensures high optical efficiency.
- High Thermal Stability: It has good resistance to thermal shock, suitable for use in high-temperature and dynamic environments.
- High Laser Damage Threshold: ZnSe can withstand high-intensity laser exposure, making it suitable for high-power laser systems.
- Ease of Processing: While ZnSe is relatively soft, it is easy to process, making it ideal for manufacturing high-precision optical components.
- Careful Handling Required: Due to its susceptibility to scratching, it is important to apply proper pressure and avoid direct contact and contamination during handling and processing.
Applications
- Infrared Optical Systems: ZnSe is widely used in infrared optical systems such as infrared lenses, windows, prisms, etc., particularly in infrared optical instruments and sensors.
- Thermal Imaging Systems: It is extensively used in thermal imaging (FLIR) systems, offering efficient infrared light transmission.
- Laser Systems: ZnSe is used in high-power CO2 laser systems as windows, lenses, and other optical elements.
- Optical Instruments and Spectroscopic Analyzers: ZnSe is suitable for critical optical components in optical measurement and analysis equipment.
- Medical Systems: It is used in medical devices as optical windows, particularly for infrared imaging and spectroscopic analysis, providing reliable optical performance.
| Physical Property | Value |
| Crystal Structure | Cubic |
| Density | 5.27 g/cm³ |
| Resistivity | ~10¹² Ω·cm |
| Melting Point | 1525 ℃ |
| Chemical Purity | 100.00% |
| Thermal Expansion | 7.1×10⁻⁶ @ 273K |
| 7.8×10⁻⁶ @ 373K | |
| 8.3×10⁻⁸ @ 473K | |
| Thermal Conductivity | 18.0 W/(m·K) @ 298K |
| Specific Heat Capacity | 0.339 J/(g·K) @ 298K |
| Knoop Hardness | 110 kg/mm² |
| Bending Strength | 55 MPa |
| Young's Modulus | 67.2 GPa |
| Poisson's Coefficient | 0.28 |
| Optical Property | Value |
| Transmission Range | 0.5-22 μm |
| Refractive Index Inhomogeneity | <3×10⁻⁶ @ 632.8μm |
| Absorption Coefficient | 5.0×10⁻³ /cm @ 1300nm |
| 7.0×10⁻⁴ /cm @ 2700nm | |
| 4.0×10⁻⁴ /cm @ 3800nm | |
| 4.0×10⁻⁴ /cm @ 5250nm | |
| 5.0×10⁻⁴ /cm @ 10600nm | |
| Thermal Light Coefficient | 1.07×10⁻⁴ @ 632.8nm |
| 7.0×10⁻⁵ @ 1150nm | |
| 6.2×10⁻⁵ @ 3390nm | |
| 6.1×10⁻⁵ @ 10600μm | |
| 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 |
