Ideal Vacuum Feedthroughs EUV Grade (Laser) Fused Silica Viewport w/ Single AR Coating @ 193nm R < 0.25% Per Surface, 1.40 View Diameter, 2.75 Conflat Flange, Viewports, Viewports,  PN  A4548-1-CF

These Ideal Vacuum Feedthroughs EUV Grade (Laser) Fused Silica Viewport w/ Single AR Coating @ 193nm R < 0.25% Per Surface, 1.40 View Diameter, 2.75 Conflat Flange  have part number A4548-1-CF, are new, and come with full Ideal Vacuum Feedthroughs warranty. Ideal Vacuum manufactures Sapphire and Fused Silica viewports using proprietary vacuum brazing and welding techniques. Fused Silica viewport designs are available with diameters up to 8 inches and include zero length designs for low profile applications. These are all bakeable to 200°C. Several standard grades of Fused Silica windows are offered, having excellent transmission from 193m to 2 microns. EUV Fused Silica Specifications are: Leak Rate: <2x10(-10) atm cc/sec; HeParallelism: <10 Arc Seconds; Flange Material: 04/316 Stn. Stl.; Flatness: l /4@ 632 nm Transmitted Wave front; 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. DUV Fused Silica Specifications are: Leak Rate: <2x10(-10) atm cc/sec; HeParallelism: <10 Arc Seconds; Flange Material: 04/316 Stn. Stl.; Flatness: l /4@ 632 nm Transmitted Wave front; Surface Finish: 20/10; Thermal Range: -100°C to 200°C; Material: Corning HPFS 7980 Fused Silica; Transmission: >99.5% @ 193nm (internal); Homogeneity Grade: A; Inclusion Class: 0. More information about these Ideal Vacuum Feedthroughs EUV Grade (Laser) Fused Silica Viewport w/ Single AR Coating @ 193nm R < 0.25% Per Surface, 1.40 View Diameter, 2.75 Conflat Flange  can be found by downloading the pdf catalog and documents below. Simply open the pdf catalog below, run the pdf search (ctrl F) and search for the A4548-1-CF.