Optical Silicon (Si) is commonly used as a substrate material for infrared reflectors and windows in the 1.5 - 8 µm region. The strong absorption band at 9 µm makes it unsuitable for CO2-laser transmission applications but Optical Silicon (Si) is frequently used for laser mirrors because of its high thermal conductivity and low density. Optical Silicon (Si) is also a usefull transmitter in the 20 µm range.
The deliveries from ground to finished Optical Silicon (Si) or Ge-blanks as well as processed uncoated or AR-coated optical elements are possible.