Skip to content 
7500-14000nm Broadband Antireflection Coating Silicon Windows
7500-14000nm Broadband Antireflection Coating Silicon Windows Coligh manufactures is optimize for wide infrared range with minimize reflection and maximize transmission.
- Wavelength range is 7500-14000nm high transmission and low reflection
- Broad band AR coating for 7500-14000nm
- Silicon substrate
Products Categories
Get A Free Quote
Silicon Optical Windows with Broadband AR Coating for 7500-14000nm Wavelength Description
7500-14000nm broadband anti-reflection coated silicon window is designed for the ultra-wide far infrared band of 7.5-14μm. This optical window produced by Coligh is an optical window based on a silicon substrate with a multi-layer anti-reflection coating on the surface. Through precise and optimized film design, we achieve a transmittance greater than or equal to 80% in an extremely wide infrared band from near-mid-infrared to far infrared.
- This infrared anti-reflection window has high transmittance in an ultra-wide band, and the transmittance is greater than 80% in the range of 7.5-14μm. Supports multi-spectral fusion detection, such as simultaneous monitoring of CO₂ and 7.7μm gas
- We use a broadband anti-reflection coating design, and through a non-uniform thickness design, it covers the entire band of 7.5-14μm.
- As the substrate of this infrared anti-reflection window, silicon can resist environmental erosion and adapt to corrosive environments such as chemical waste gas and marine salt spray. . And the Mohs hardness is 7, resistant to sand and dust impact
- We support window processing with diameters from 1mm to 1000mm, and can customize plane, spherical, aspherical or complex special-shaped structures.
7500-14000nm Broadband Antireflection Coating Silicon Windows Technical Datasheet
| Parameter | Specification |
| Substrate Material | Silicon |
| Wavelength Range | 7500-14000nm |
| Coating Type | Anti-Reflective (AR) |
| Average Transmittance | ≥ 80% (within 7500-14000nm 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) |
7500-14000nm Broadband Antireflection Coating Silicon Windows Applications
- Industrial detection
Nano-scale microcracks and uneven doping defects in semiconductor wafers can lead to abnormal local thermal conductivity, which requires non-contact detection by 7.5-14μm infrared thermal imaging, but traditional windows have low transmittance and are easily damaged by lasers. 7500-14000nm infrared anti-reflection windows can be integrated into laser thermal excitation detection equipment, supporting multiple laser wavelengths and thermal radiation detection - Environmental monitoring
CO₂, CH₄, and N₂O greenhouse gases need to be monitored simultaneously, but traditional spectroscopic systems are bulky and expensive. This infrared anti-reflection silicon window can be carried on satellites or drones for multi-spectral remote sensing payloads to simultaneously detect multiple gases - Aerospace
When the aircraft Mach number is greater than 5, the surface temperature exceeds 1000°C, and the infrared window needs to have high temperature resistance, aerodynamic scouring resistance, and high transmittance. This infrared window can be used as the outermost protection for the infrared seeker of aircraft - Food industry
During the baking process, the moisture distribution and temperature gradient inside the dough directly affect the quality of the finished product. Traditional contact temperature measurement will damage the product and cannot obtain full-domain data in real time. This infrared anti-reflection window can be integrated into the inner wall of the tunnel oven as a non-contact thermal imaging window to capture the surface and internal temperature distribution of bread/biscuits in real time
