CaF2 is a crystal,which has good transmission from 170nm to 7800nm.It’s slightly soluble in water and susceptible to thermal shock.CaF2 is commonly in IR components such as windows,Lenses and prisms.
l Transmission Range:170nm-7800nm
l Thermal Expansion Coefficient:18.85*10-6/K
Sapphire is a single crystal aluminum oxide(AL2O3).It is one of the hardest materials .Sapphire has good transmission characteristics over the visible,and near IR spectrum.It exhibits high mechanical strength,chemical resistance,thermal conductivity and thermal stability.It is often used as window material in specific field such as space technology where scratch or high temperature resistance is required.
|Crystal Symmetry Hexagonal||System|
Silicon(Si) is commonly used as a substrate material for infrared reflectors and windows in the 1.5um-8um region.The strong absorption band at 9um 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.Silicon is also a useful transmitter in 20um range.
|Material Type||CZ FZ;N or P|