Sapphire is the general name for corundum stones of all colors except the red ruby. Its main ingredient is alumina (AI2O3). Sapphire glass is a synthetic sapphire,Gem-grade sapphires can be easily and cheaply produced in the laboratory and have the same chemical composition and physical properties as natural gems.

Synthetic sapphire is transparent single crystal 99.99% pure Al2O3 that exhibits a unique combination of physical, chemical, electrical and optical sapphire waferis one of the hardest materials, is come from 99.999％ Al2O3 single crystal,
and possesses very good transmission during the range ofvisible and near IR spectrum.High thermal stability and excellent thermal conductivity make the sapphire window suitable for the applications in high power. The loss in a sapphire window is less than in another common optical window.

Our Sapphire Precision Windows are available in 1/2" and 1" diameters. The uncoated versions are designed for applications in the 150 nm - 4.5 μm range. AR-coated windows feature anti-reflective coatings designed for 1.65 µm - 3.0 µm (-D) or 2.0 µm - 5.0 µm (-E1) on both sides.