Window
ZnSe (Zinc Selenide) window
ZnSe windows deliver exceptional transmission across the wide spectrum from 0.6 µm to 20 µm, making them ideal for infrared applications. Featuring a high refractive index and low absorption, these components excel in laser systems, thermal imaging, and CO₂ laser optics.
ZnSe offers excellent optical homogeneity and chemical stability, though requires careful handling due to thermal sensitivity. At Spectro Optics, we supply precision ZnSe windows with custom coatings to meet your specific application requirements, ensuring optimal performance in demanding environments.
Specifications
Material: High-purity optical-grade zinc selenide
Diameter Size: 2–400 mm
Transmission Range: 0.55–22 μm (visible to far-IR)
Refractive Index: 2.4 at 10.6 μm, high refractive index
Low Absorption: Minimal absorption in IR band, high transmittance for laser applications
Low Dispersion: Broad spectral coverage with consistent optical performance
Thermal Stability: Reliable performance in moderate thermal environments, requires careful handling due to thermal sensitivity
Surface Quality: 40/20 or better
Surface Accuracy: PV < λ/10 or better
Coatings Available: AR coating (T>99% at CO₂ laser wavelength), DLC, or custom IR coatings for 1–12 μm
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