← Back to product family
Zinc Selenide (ZnSe) Windows SKU: 560-6250
• Low absorption in the red end of the visible spectrum • Not hygroscopic • Quite stable in the laboratory environment Zinc selenide (ZnSe) is the most popular material for infrared applications. Due to a very wide transmission range covering 0.6-22 µm chemical vapor deposition…
Variant specifications
| Specification | Value |
|---|---|
| Diameter | ø 25.4 mm |
| Thickness | 2 mm |
| Coating | uncoated |
| Group | Uncoated |
Shared product specifications
These specifications apply across the Zinc Selenide (ZnSe) Windows product family.
| Crystal type | cubic |
| Density, g / cm³ | 5.27 |
| Melting point, °C | 1525 |
| Refractive index @ 8-13 µm | n = 2.417-2.385 |
| Refractive index @ 10.6 µm | n = 2.403 |
| Transmission band, µm | 0.6÷22 |
| Bulk absorption coefficient cm⁻¹@ 10.6 µm | 0.6-1.0×10⁻³ |
| Coefficient of linear thermal expansion, °C-¹ | 8.56×10⁻⁶ |
Specifications
| Material | ZnSe |
| Surface quality | 40-20 scratch & dig (MIL-PRF-13830B) |
| Clear aperture | 90% of the diameter |
| Diameter tolerance | +0.0 -0.13 mm |
| Thickness tolerance | ±0.1 mm |
| Parallelism | 3 arcmin |
| Flatness | λ / 40 per inch @ 10.6 µm over clear aperture |
| Coating | both surfaces AR coated @ 10.6 µm, R ≤ 0.5% per surface |
Classification
| Wavelength | UV|IR |
Product brochures
Shared documentation for the complete product family.