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1000nm-3000nm Silicon IR Anti Reflection Coatings Filters
1000nm-3000nm silicon ir anti reflection coatings filters is designed to transmit wavelength from 1000nm to 3000nm. Coligh manufactures various IR filters.
- Broadband anti-reflective
- Wavelength range: 1000nm to 3000nm
- Substrate: Silicon
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1000nm to 3000nm Silicon Infrared Anti-reflection Optical Filter Description
1000nm-3000nm silicon-based infrared anti-reflection coating filter is an optical filter specially designed for near-infrared and mid-infrared bands. This filter produced by Coligh is based on a high-purity single-crystal silicon substrate and combined with multi-layer dielectric anti-reflection coating technology to significantly reduce the reflectivity in the range of 1000-3000nm.
- The effective working band is 1000-3000nm, covering short-wave infrared to mid-wave infrared with ultra-wide infrared coverage
- Multi-layer dielectric film system design, the transmittance is greater than or equal to 90% in the range of 1000-3000nm, reducing energy loss
- The characteristics of the silicon substrate make the filter highly transparent in the range of 1-6μm, suitable for high-power laser transmission
1000nm-3000nm Silicon IR Anti Reflection Coatings Filters Datasheet
| Parameter | Specification |
| Substrate Material | Silicon |
| Wavelength Range | 1000-3000nm (SWIR-MWIR） |
| Coating Type | Anti-Reflective (AR) |
| Average Transmittance | ≥ 90% (within 1000-3000nm range) |
| Surface Quality | 60-40, 40-20 |
| Coating Method | Ion-assisted deposition / Electron-beam evaporation |
| Custom Options | Available upon request (wavelength tuning, dual-side) |
1000nm-3000nm Silicon IR Anti Reflection Coatings Filters Applications
- Spectral analysis
2-5μm infrared spectrum requires high signal-to-noise ratio to detect gas characteristic absorption peaks, but the reflection noise of silicon window will mask weak signals. This wide filter forms high transmittance in the range of 1000-3000nm, which can suppress surface reflection, improve the purity of optical path signal, and reduce detector noise. - Industrial high temperature monitoring
Steel smelting, glass melting furnace and other scenes need to monitor material temperature in real time through infrared temperature measurement (1200-3000nm band), but high temperature radiation will damage traditional optical components. The silicon substrate of this filter has high temperature resistance, combined with coating, to ensure that the transmittance remains stable at high temperature. It can avoid high temperature visible light interfering with sensor readings. - Biosensing
Blood sugar detection and tissue imaging need to penetrate biological tissues efficiently in the 1000-2500nm band, but the reflection of silicon components will weaken the effective signal. After coating, this filter can optimize the transmittance of 1100-1300nm and 1700-2500nm bands and accurately extract biosignature signals.
