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Materials >>Silicon>> Silicon windows catalog

Silicon windows. Silicon windows catalog.

Welcome to Silicon windows catalog page. We offer two types of Silicon windows: Czochralsky and Float-zone material.

  • Transmission from 1.2 - 7m
  • Available Uncoated or AR or DLC Coated for 3-5 m (MWIR)
  • Ideal for Weight Sensitive Application
  • Cheaper than Germanium and ZnSe

High Precision Silicon windows:

We can provide up to 300 mm diameter Silicon windows with S/D 20/10; Flatness 0.25 waves at 633 and parallelism up to 10 arc. sec. Custom sizes, specifications, AR and DLC coating are available.

Contact us for quotation of your custom Si window or Si wedge and save up to 50% from major optical catalog price!

Cat# Dia, in Dia,mm TH, in TH, mm
SI-W-6.35-0.5 0.25 6.35 0.019 0.5
SI-W-12.7-1 0.5 12.7 0.039 1.0
SI-W-12.7-2 0.5 12.7 0.079 2.0
SI-W-18.5x18.5x0.4 0.73x0.73 18.5x18.5 0.016 0.4
SI-W-25.4-1 1 25.4 0.039 1.0
SI-W-25.4-2 1 25.4 0.079 2.0
SI-W-25.4-3 1 25.4 0.118 3.0
SI-W-25.4-4 1 25.4 0.157 4.0
SI-W-25.4-5 1 25.4 0.197 5.0
SI-W-25.4-6 1 25.4 0.236 6.0
SI-W-38.1-3 1.5 38.1 0.118 3.0
SI-W-38.1-4 1.5 38.1 0.157 4.0
SI-W-38.1-5 1.5 38.1 0.197 5.0
SI-W-38.1-6 1.5 38.1 0.236 6.0
SI-W-50.8-3 2 50.8 0.118 3.0
SI-W-50.8-4 2 50.8 0.157 4.0
SI-W-50.8-5 2 50.8 0.197 5.0
SI-W-50.8-6 2 50.8 0.236 6.0
SI-W-63.5-3 2.5 63.5 0.118 3.0
SI-W-63.5-6 2.5 63.5 0.236 6.0
SI-W-76.2-3 3 76.2 0.0.118 3.0
SI-W-101.6-6 4 101.6 0.236 6.0
SI-W-127-6 5 127 0.236 6.0
SI-W-152.4-6 6 152.4 0.236 6.0
SI-W-177.8-10 7 177.8 0.394 10.0
SI-W-203.2-10 8 203.2 0.394 10.0
Silicon windows up to 300mm diameter are available on request. Silicon windows with yellow mark are available in stock and can be shipped within 1-2 weeks. Ask now.

Standard specifications:
Diameter tolerance: +0/-0.1mm;
thickness tolerance: +/-0.1mm;
Clear Aperture: 90%;
Parallelism: 3 arc min;
Flatness: 4 fringes or by request
Surface finish: S/D 60/40

Silicon (Si) Windows manufactured from optical grade silicon are popular for the 1.2 - 7m spectral region due to their low cost (1/10 of Germanium and ZnSe price) and low density. Due to its low density (half that ofGermaniumorZinc Selenide), Silicon windows is ideal for weight sensitive applications, especially those in the 3 - 5m region. Density is 2.329 g/cm3and Knoop Hardness is 1150, making it harder and less brittle than Germanium.