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2000-12000nm AR Coated Silicon Windows
2000-12000nm AR Coated Silicon Windows is designed for high transmission and low reflection in 2000-12000nm. Coligh manufactures various infared windows
- Broadband Anti-Reflective Coating 2000-12000nm
- High Transmission Performance 2000-12000nm
- High-Quality Silicon Substrate
2000–12000nm Anti-Reflective Silicon Window Desciprion
2000-12000nm AR Coated Silicon Custom Infrared Windows Coligh manufactures is an ultra-wide spectrum optical window covering mid-infrared to far-infrared bands.
- This infrared optical window is adapted to the full band of 2000-12000nm, and the transmittance in this band is greater than or equal to 85%, breaking through the wavelength limitation of traditional silicon windows. Through the design of multi-layer anti-reflection film, the projection range covers mid-infrared and far-infrared
- The ultra-wide spectrum optical window covers multiple applications, such as CO₂ laser, methane detection, long-wave thermal imaging and far-infrared analysis, etc.
- We use high-purity single crystal silicon as the substrate to reduce long-wave infrared absorption and ensure that the 12μm band still maintains high transmission performance. In addition, precise surface polishing can reduce scattering loss and improve the laser system beam quality and thermal imaging signal-to-noise ratio.
- The characteristics of the silicon substrate itself have extreme environmental tolerance, such as the operating temperature range extends to -200°C to 500°C, which can resist sand and dust wear, acid and alkali corrosion and space radiation environment.
- We can support window customization from 0.5mm to 1000mm to meet the needs of micro detectors to large astronomical telescopes.
2000-12000nm AR Coated Silicon Windows Technical Datasheet
| Parameter | Specification |
| Substrate Material | Silicon |
| Wavelength Range | 2000-12000nm |
| Coating Type | Anti-Reflective (AR) |
| Average Transmittance | ≥ 85% (within 2000-12000nm range) |
| Surface Quality | 60-40, 40-20 |
| Coating Method | Ion-assisted deposition / Electron-beam evaporation |
| Custom Options | Available upon request (wavelength tuning, dual-side，size up to 10000mm, any shape to be customized) |
2000-12000nm AR Coated Silicon Windows Applications
CO₂ laser cutting machine window
The output wavelength of CO₂ laser is 10.6μm. Traditional optical materials are expensive and easily damaged by high-temperature sputtering. A window with high transmittance and high-temperature resistance is required to protect the laser head. Silicon window optimizes AR coating for 10.6μm band, with transmittance >85%. At the same time, it is resistant to high temperature up to 500°C, blocks metal slag pollution, and maintains laser beam quality.
Far-infrared spectrum detection of ozone (O₃) and Freon
Ozone has characteristic absorption peaks at 9.6μm and Freon at 11.8μm, which require far-infrared spectrum detection, but conventional materials are toxic and easy to deliquesce. This silicon window covers the 6-12μm band with a transmittance of >90%. As an optical interface of gas analyzer, it ensures the complete transmission of far-infrared signals and resists moisture corrosion.
Multi-component analysis of industrial waste gas
Industrial waste gas contains multiple gases, such as CO₂, CH₄, and SO₂, which require wide-band infrared spectrum synchronous detection, but the traditional window band is limited. This optical window covers 2-12μm in a single window, supports multi-gas characteristic peak detection, and reduces the complexity of the optical system.
Satellite infrared earth observation payload
Satellites need to monitor surface temperature, ocean thermal radiation, etc. through the 8-12μm band, but the extreme window in the space environment needs to be resistant to radiation and thermal shock. This silicon window is equipped with an anti-radiation coating, which transmits far-infrared signals and protects the detector from space debris impact and solar radiation damage.
Non-contact far-infrared body temperature screening
The human body radiation peak is 8-14μm, and high-flow places require fast and accurate temperature measurement, but environmental thermal noise is easy to interfere with accuracy. This silicon window suppresses non-target band interference, transmits 8-12μm human body radiation, and combines AR coating to improve signal strength.
