Fused Silica Viewports – EUV Grade – Non Magnetic
£ 639 – £ 2,006
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- Transmission Curve
TECHNICAL SPECS – CLICK HERE
Fused Silica Viewports – EUV Grade – Non Magnetic
Fused silica viewports offer increased transmission of UV and IR wavelengths. We offer fused silica viewports in three grades; UV, DUV, and Excimer UV with window material HPFS® fused silica in varying grades. We also offer a range of anti-reflection coated fused silica viewports which have an anti-reflective coating applied to both sides of the vacuum window, achieving maximised transmission for various laser types.
Features:
• UHV compatible.
• Synthetic fused silica
Specifications:
Materials
Window : Corning HPFS® 7980 fused silica
Carrier : Proprietary alloy, magnetic permeability <1.01.
Flanges : 316LN St.St.
Max. Bakeout Temperature* :
CF flanged viewports : 200°C
Max. Thermal Gradient : 25°C per minute
| Optical properties | |||
| UV Grade | DUV Grade | EUV Grade | |
| Surface finish : | 40/20 scratch/dig | 20/10 scratch/dig | 20/10 scratch/dig |
| TWD : | 10λ @ 632nm (peak to valley) | λ/4 @ 632nm (peak to valley) | λ/4 @ 632nm (peak to valley) |
| UV transmission : | @ 250nm (external) >90% | @ 248nm (internal) >99.8% | @ 193nm (internal) >99.5% |
| Parallelism : | <30 arc minutes | <30 arc minutes | <10 arc seconds |
| Homogeneity grade : | F | A | A |
| Inclusion class : | 2 | 0 | 0 |
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* – Assembly rating is reduced to that of the lowest rated component.
Anti-Reflective Coating :- Anti-reflective coatings are available, please call our sales office to discuss your specific requirements.
| Product Code | Flange | A | B | C | D | Price | Quantity | PDF & STP | |
|---|---|---|---|---|---|---|---|---|---|
| FSVP-EUV-16CFNM | DN16CF | 16.0 | 2.5 | 4.3 | 8.9 | £ 639 | |||
| FSVP-EUV-40CFNM | DN40CF | 35.5 | 3.2 | 8.9 | 12.7 | £ 943 | |||
| FSVP-EUV-63CFNM | DN63CF | 68.3 | 6.4 | 10.4 | 17.3 | £ 2,006 |
