Window
Silicon window
Silicon windows are ideal for infrared systems requiring durability, thermal resistance, and high optical clarity. They are a cost-effective alternative to germanium in many mid-IR applications, especially where temperature stability and mechanical robustness are critical. It has half the density of Ge or ZnSe, of the highest hardness among IR materials, and more affordable.
Specifications
Material: High-purity optical-grade silicon, mono
Diameter size: 5-600 mm
Transmission Range: 1.2–8 µm
Refractive Index: 3.4 at 3–5 µm
Low Absorption: Reachs high transmittance and minimal energy loss
Low Dispersion: Reduces chromatic aberration
Thermal Stability: Maintains performance across wide temperature ranges
Surface Quality: 40/20 or better
Surface Accuracy: PV<λ/10 or better
Coatings Available: Anti-reflective with T>95%, DLC (Diamond-Like Carbon), or custom IR coatings for 3–12 µm
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