Sapphire Optics and Sapphire Optical Windows

The monocrystalline form of Al2O3 is called sapphire, which is one of the hardest materials and ranks ninth under the Mohs hardness. Sapphire is the second hard crystal after diamond. Due to its structural strength, the sapphire optical window can be made thinner than other common dielectric optical windows, thus increasing transmittance.  The sapphire optical … Read more