Partial Reflection (PR) coatings provide attenuation functions and are generally applied to output mirrors of laser cavity. Our company can design the PR coating with reflectance from 10% to 99.7% to achieve the desired performance.
Wideband PR coatings are typically used at 45 degrees angle to the beam splitting of wideband light, such as 50/50，40/60，30/70 with error at around 5%.
There is a kind of super wideband PR coatings that can split beam in a wide light region from UV, visible to infrared. This coating is widely used in optical components.
Factory Standard – Contact us for manufacturing limit or custom specifications.
- Substrate: fused silica, BK7
- Surface Figure: < λ/10 @ 632.8nm
- Surface Quality: 40-20
- Coating Material Electron beam deposited dielectric multi-layers
- Chamfer: 0.5mm, 45°
- Incident: 0°,45°
- Clear Aperture: > Central 85% of diameter
- Rear Surface AR Coating R<0.2%
Single Wavelength PR Coatings
| Wavelength (nm) | Residual Reflectance |
| 190nm-10.6μm | 10±2%,20±3%,30±3%, 40±3%,50±3%,60±3%, 70±3%,80±3%,90±2%, 95±1.5%,98±1%,99±0.5% |
