Substrates


These lower cost optical flats have minimal reduction in surface quality and are suitable for most applications.
These sapphire windows contain no impurities and provide high transmission without any absorption, covering the visible and infrared regions of the spectrum.
Silicon is a monocrystal mainly used in semiconductors and does not absorb in the IR range from 1.2 µm to 6 µm.
Germanium as a monocrystal, which is mainly used in semiconductors, is non-absorbing in IR ranges from 2 µm to 20 µm.