Zinc Selenide (ZnSe)
Low-absorption infrared substrate with very high transmission at 10.6 µm. The standard window and output-coupler material for CO2 lasers, FTIR instruments, and thermal imaging optics.
Flat optics material
Typical properties
- Transmission range
- 0.6 – 21 µm
- Refractive index
- 2.4028 @ 10.6 µm
- Knoop hardness
- 120 kg/mm²
- Density
- 5.27 g/cm³
- Thermal expansion (CTE)
- 7.1 × 10⁻⁶ /K
Published values for this material class, given to help you shortlist a substrate. They are not lot-specific guarantees. Request the SPEKTON datasheet for certified figures against your specification.
Download Technical Datasheet (PDF)Datasheet referenced from Crystran.
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