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Silicon

Silicon (Si) is grown by Czochralski (CZ) pulling techniques. CZ Silicon is commonly used as substrate material for infrared reflectors and windows in the 1.5 - 8 micron region. The strong absorption band at 9 microns makes it unsuitable for CO2 laser transmission applications, but it is frequently used for laser mirrors because of its high thermal conductivity and low density. Applications: window, lens in the 1.5 - 8 ?m region and mirrors for CO2 laser and spectrometer applications

Si Lens

Specifications:
Material: Silicon
Diameter Tolerance: +0.00, -0.15mm(Standard), +0.00,-0.02mm(Precision)
Flatness: lambda@632.8nm
Surface Quality: 60-40 S/D
Paraxial Focus Length: +/-2%
Centration: <10arc minutes
Clear Aperture: >85% of diameter
Bevel: 0.25x45deg