Authorized seller in Germany, ensuring genuine products and trusted services.
Quartz Natural Z-Cut Zero Length
Z-Cut natural quartz viewports are offered in CF, ISO, and KF flange styles. The viewports comprise a high-quality natural quartz optic with precise flatness, parallelism, scratch and dig specifications.
- Description
- Specifications
- Transmission Curve
- Additional Details
- Options
Description
One of the best materials for transmission of wavelengths above 3.2 µm is z-cut crystal quartz, so z-cut quartz windows are popular as THz windows. It is important that z-cut crystal quartz windows are also transparent in the visible spectrum, allowing easy adjustment with a HeNe laser and do not change the state of light polarization. Z-cut quartz also has excellent transparency in the vacuum UV portion of the spectrum and is therefore a popular window material for use in UV spectroscopy and UV lithography.
The ultra-high vacuum (UHV) CF versions are offered using high-grade 304L or 316LN stainless steel flanges. Non-magnetic viewports are offered for low-energy applications or surface science applications needing low magnetic fields. The non-magnetic viewports use a non-magnetic weld ring instead of the regular kovar weld ring.
Flanges in 304L stainless steel are used for the high vacuum KF and ISO viewports. TSL viewports are manufactured in cleanroom conditions and helium leak tested, cleaned, and packed to UHV standards.
The rugged construction of the quartz viewports allows bake-out to a maximum of 120 °C with UHV performance. Options with anti-reflective coatings are also offered. Non-standard viewports can be manufactured on request, including re-entrant style microscope/camera viewports. Annealed copper gaskets and other component accessories are also supplied by TSL.
| Seal Type: | Bond |
|---|---|
| Maximum Temperature: | 120 °C |
| Minimum Temperature: | -45 °C |
| Maximum Rate of Temperature Change: | 3 °C per minute |
| Leak Rate: | <1×10-10 atm-cc/sec (He) |
| Pressure Range: | 1 bar to <1×10-9 mbar |
| Surface Quality: | 20/10 scratch/dig |
| Parallelism: | < 3 arc minutes |
| Flatness: | λ/2 |
Transmission Curve – Quartz Natural Z-Cut
