Skip to content 
400-1200nm AR Coated Fused Silica Window
400-1200nm ar coated fused silica window is designed for superior transmission and minimal reflection in 400-1200nm. Coligh manufactures different substrate optical windows
- 400-1200nm wide wavelength range high transmission
- High quality fused silica material
- Anti-reflective coating
AR Coated Fused Silica Window for 400-1200nm Spectrum Description
400-1200nm AR coated fused silica window we manufacture is a high-performance optical window designed for visible light to near-infrared bands.
- This optical window covers the 400-1200nm band, is compatible with visible light and near-infrared light, and supports multi-wavelength composite applications
The transmittance is greater than 98% in the 400-1200nm range, significantly reducing light energy loss - We use fused silica as the substrate. Fused quartz has ultra-low thermal expansion coefficient, high laser damage threshold and low fluorescence background, and has excellent optical performance and environmental tolerance
400-1200nm AR Coated Fused Silica Window Technical Datasheet
| Parameter | Specification |
| Substrate Material | Fused Silica |
| Wavelength Range | 400-1200 nm |
| Coating Type | Anti-Reflective (AR) |
| Average Transmittance | ≥ 98% (within 400-1200nm range) |
| Surface Quality | 60-40, 40-20 |
| Coating Method | Ion-assisted deposition / Electron-beam evaporation |
| Custom Options | Available upon request (wavelength tuning, dual-side) |
400-1200nm AR Coated Fused Silica Window Applications
High-power laser output
The laser output needs to withstand kilowatt-level power density. Ordinary windows are prone to thermal deformation or film ablation, resulting in reduced beam quality. The high damage threshold and low absorption rate of fused quartz ensure efficient energy transmission
Fluorescence microscope imaging window
Fluorescence imaging needs to avoid window autofluorescence interference. Traditional glass generates background noise under ultraviolet excitation, reducing image contrast. The low fluorescence characteristics of fused quartz combined with 400-1200nm AR coating ensure efficient transmission of excitation light and emission light.
