IR Windows & Substrates

IR infrared transmitting custom made windows are made in selection of IR materials. These include semi conductor and crystal optical materials of which some are widely used for there (UV) ultraviolet properties.

Material Range Silicon (Si) Our optical grade Silicon windows are made from the Czochralski method producing Silicon 99.99% pure, used in optical filters and experiments. Specification Standard   Diameter: +0.00/-0.10mm Surfaces: 60/40 Thickness: ± 0.10mm Flatness: ≤ 5 Fringes Edges: Fine Ground Parallelism: ≤ 3 Arc mins   Custom Sizes & Options Diameters: 4mm to 150mm Squares/Rectangles: 1mm to 100mm Thickness: 0.50mm to 10mm Surfaces: 80/50 to 40/20 Diameter/Thickness: ToL Up to 0.02mm Materials: Polycrystalline, Mirror & Floatzone Coatings: Anti-reflection

Germanium (Ge)

Germanium has a high ref index resulting is a natural 50% beamsplitters (uncoated). Useful transmission for lens systems and optical filters.

Specification Standard   Diameter: +0.00/-0.10mm Surfaces: 60/40 Thickness: ± 0.10mm Flatness: ≤ 5 Fringes Edges: Fine Ground Parallelism: ≤ 3 Arc mins   Custom Sizes & Options Diameters: 4mm to 150mm Squares/Rectangles: 1mm to 100mm Thickness: 0.50mm to 10mm Surfaces: 80/50 to 40/20 Diameter/Thickness: ToL Up to 0.02mm Materials: Polycrystalline Coatings: Antireflection & Diamond

Other IR materials include

• IR Quartz - stock – custom
• Sapphire – stock – custom
• Calcium Fluoride (CaF²)
• Magnesium (MgF²)
• Lithium Fluoride (Lif)
• Barium Fluoride (BaF²)
• Potassium Bromide (KBr)

Please send us your requirements or for further information please contact us.