The ZNW13AR.20 is a 3 µm to 12 µm antireflection coated, 25.00 mm in diameter and 3.00 mm thick Zinc Selenide window. Zinc Selenide windows have wide variety of usage in high power CO2 laser systems because of its low absorption coefficient and high resistance to thermal shock. It is an excellent choice for many MWIR (Mid-Wave Infrared) to IR applications due to its broad wavelength range (6 µm to 16 µm).
| Model | ZNW13AR.20 |
|---|---|
| Material | CVD Laser Grade ZnSe |
| Diameter | 0.98 in. (25.0 mm) |
| Thickness | 0.12 in. (3.0 mm) |
| Antireflection Coating | 300-1200 nm (AR.20) |
| Surface Quality | 40-20 scratch-dig |
| Surface Accuracy | λ/20 @ 10.6 µm |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ± 0.1 mm |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol |


