Sapphire Laser Crystal Windows

Sapphire is a single crystal form of Al2O3, with a favorable combination of chemical, mechanical and optical properties. Sapphire is resistant to attack by strong acids, enabling use in a corrosive atmosphere. It is resistant to scratch and abrasion with very high Knoop hardness of 1800 parallel to the optic axis (C-axis), 2200 perpendicular to the optic axis. Uncoated Sapphire windows are ideal for harsh conditions, including environments subject to high temperatures, high pressures, strong vacuum, or corrosive atmospheres. Sapphire has high compressive strength and is resistant to attack from strong acid. Advantage of Sapphire as below: Ideal for high temperature, high pressure, or strong vacuum environments; Highly corrosion resistant; Transparent from 170 nm to 5.5 μm; Extremely hard and more durable than standard optical glass. Coupletech provides Sapphire isone of the hardest materials, and possesses very good transmission during therange of visible and near IR spectrum. It is widely used as optical window in infraredand far infrared military equipments, apparatus and instruments of satelliteand space technology, and navigation and spaceflight, such as night infraredscopesight and night vision camera, etc. The sapphire windows are intensivelyapplied in high-tech fields. Coupletech also provides all kinds of laser crystal and laser components.www.coupletech.com