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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
Top Seller
Sapphire Windows
×
Features Extreme Surface Hardness Chemical Resistance
Transmits Wavelengths Ranging From UV to Mid-Infrared
Thinner and Stronger than Standard Glass Windows
Anti-Reflection Coating Options Covering 350 - 5000nm Available
TECHSPEC® Sapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamond and, because of their structural strength, sapphire windows can be made much thinner than other common windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) and is useful in a transmission range from UV to mid-infrared or 330 - 5500nm when uncoated. TECHSPEC® Sapphire Windows are available with anti-reflection (AR) coatings to improve performance in the visible, NIR, and IR spectra with coating options covering 350 - 5000nm.
Common Specifications
Bevel:
Protective as needed
Clear Aperture (%):
≥90
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
1900
Parallelism (arcmin):
≤3.5
Poisson's Ratio:
0.27
Young's Modulus (GPa):
435
Abbe Number (vd):
72.24
Axis Orientation:
Random
Birefringence (no-ne):
0.008 for Visible Light Orthogonal to Optical Axis
Determine how to select an optical window based on its material transmission, thermal and mechanical properties, and other specifications at Edmund Optics.
I need a window for imaging underwater. The water is filtered and at room temperature with a very small amount of detergent in it. It is flowing at low speed. Will a MgF2 coated window survive this for a few years?
A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping.
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