Fused Silica (Synthetic Amorphous Quartz) Viewports
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UV Fused Silica Specifications
Leak Rate: <2x10(-10) atm cc/sec He
Parallelism: <30 Arc Minutes
Flange Material:  304/316 Stn. Stl.
Surface Finish: 40/20 
Thermal Range:  -100°C to 200°C
Material:  Corning HPFS 7980 Fused Silica
Transmission:  >90% @ 250nm (external)
Homogeneity Grade:  F
Inclusion Class: 2

Operating Conditions

The thermal ratings specified are safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. Temperature ratings for various mounting options may reduce the operating range of a window assembly. All assemblies have a maximum thermal gradient of 25ºC per minute and may be damaged if this limit is exceeded.

 

 

UV Grade Fused Silica Viewport, 0.18-3.35 microns transmission
P/N Flange View Dia Material
A1561-1-CF 2.75" CF 1.40" 304/ Fused Silica
A1561-2-CF 3.37" CF 1.40" 304/ Fused Silica
A1561-3-CF 4.50" CF 2.69" 304/ Fused Silica
A1561-4-CF 4.62" CF 2.69" 304/ Fused Silica
A1561-5-CF 6.00" CF 3.88" 304/ Fused Silica
A1561-6-CF 6.750" CF 3.88" 304/ Fused Silica
A1561-7-CF 8.00" CF 5.38" 304/ Fused Silica
A1561-8-CF 10.00" CF 7.78" 304/ Fused Silica
A7154-1-CF 1.33"CF 0.63" 316LN/ Fused Silica
A7981-1-CF 2.75" CF 1.40" 316LN/ Fused Silica
A8711-1-CF 4.50" CF 2.69" 316LN/ Fused Silica
A12282-1-CF 6.00" CF 3.88" 316LN/ Fused Silica
A4563-1-QF KF25 0.63" 304/ Fused Silica
A2206-1-QF KF40 1.40" 304/ Fused Silica
A0816-1-QF KF50 1.40" 304/ Fused Silica

 

 

DUV Fused Silica Specifications
Leak Rate: <2x10(-10) atm cc/sec He
Parallelism: <10 Arc Seconds
Flange Material:  304/316 Stn. Stl.
Flatness:  l /4@ 632 nm Transmitted Wavefront
Surface Finish: 20/10 
Thermal Range:  -100°C to 200°C
Material:  Corning HPFS 7980 Fused Silica
Transmission:  >99.8% @ 248nm (internal)
Homogeneity Grade:  A
Inclusion Class: 0

Operating Conditions

The thermal ratings specified are safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. Temperature ratings for various mounting options may reduce the operating range of a window assembly. All assemblies have a maximum thermal gradient of 25ºC per minute and may be damaged if this limit is exceeded.

 
 

EUV Fused Silica Specifications
Leak Rate: <2x10(-10) atm cc/sec He
Parallelism: <10 Arc Seconds
Flange Material:  304/316 Stn. Stl.
Flatness:  l /4@ 632 nm Transmitted Wavefront
Surface Finish: 20/10 
Thermal Range:  -100°C to 200°C
Material:  Corning ARF 193 Fused Silica
Transmission:  >99.5% @ 193nm (internal)
Homogeneity Grade:  A
Inclusion Class: 0

Operating Conditions

The thermal ratings specified are safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. Temperature ratings for various mounting options may reduce the operating range of a window assembly. All assemblies have a maximum thermal gradient of 25ºC per minute and may be damaged if this limit is exceeded.