UV Grade Fused Silica is synthetic amorphous silicon dioxide of extremely high purity providing maximum transmission from 195 to 2100 nm. This non-crystalline, colorless silica glass combines a very low thermal expansion coefficient with good optical qualities, and excellent transmittance in the ultraviolet region. Transmission and homogeneity exceed those of crystalline quartz without the problems of orientation and temperature instability inherent in the crystalline form. It will not fluoresce under UV light and is resistant to radiation. For high-energy applications, the extreme purity of fused silica eliminates microscopic defect sites that could lead to laser damage.Yutai Optics offers Chinese fused silica JGS1,JGS2,JGS3, as well as import Corning 7980,7979,8655.

Transmittance of JGS1,JGS2,JGS3:


Transmittance of Corning 7980,7979,8655:


Specifications: 
Material:Fused Silica
Diameter Tolerance: +/-0.15 mm
Thickness Tolerance :+/-0.1mm 
Parallelism <3 arc minutes
Surface Quality :20-10
Surface Figure:λ/10@633nm 
Bevel:0.25mm×45 ° 
Clear Aperture:90% 
Coating:Specified by customers 

Highly Recommended Fused Silica Windows from Yutai Optics:
Rectangular Fused Silica Windows with Round Corners
Fused Silica Windows with Hole
Fused Silica Windows with Step
Coring Series Fused Silica Windows
Thin Fused Silica Glass Sheet