Rotem Crystals manufacture windows and domes with diameters up to 380mm (flat) & 260mm (spherical), providing unparalleled performance in a wide variety of applications from “high end” where consistent quality and accuracy are paramount to the harshest of environments. Offering transmission ranges from UV to mid-IR and resistance to chemical degradation typical of those in semiconductor applications, second only to diamond for hardness and resistance to physical damage such as scratches and digs. Sapphire Domes and Windows used in marine applications withstand high pressures, resist damage caused by abrasive sand particles, saltwater, and chemical degradation, in addition the ultra-smooth surface of the window or dome helps prevent algae growth.