The 20QW40-30AR.16 Laser-Grade Parallel Window is parallel to less than 30 arc sec for minimal transmitted beam deviation. This 2 inch (50.8 mm) diameter UV Grade Fused Silica window is 10 mm thick. It has Newport's AR.16 broadband NIR antireflection coating for a 650 to 1000 nm wavelength range. For demanding applications, such as intracavity laser applications, holography, and multiphoton imaging, this window has a λ/20 surface flatness and 10-5 scratch-dig significantly reducing unwanted scatter.
| Model | 20QW40-30AR.16 |
|---|---|
| Material | UV Grade Fused Silica |
| Diameter | 2.0 in. (50.8 mm) |
| Thickness | 0.39 in. (10.0 mm) |
| Antireflection Coating | 650-1000 nm (AR.16) |
| Surface Quality | 10-5 scratch-dig |
| Clear Aperture | Central 85% of diameter |
| Wedge | ≤30 arc sec |
| Diameter Tolerance | +0/-0.15 mm |
| Thickness Tolerance | ±0.25 mm |
| Chamfers | 0.38–1.14 mm face width |
| Chamfers Angle/Tolerance | 45° ±15° |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended |
