Viewports for UV/IR applications
Vacuum components from VACOM
Viewports for the extended spectral range allow light to be transmitted deeper into the ultraviolet (UV) and infrared (IR) spectrum using optical materials such as CaF2, ZnSe, sapphire or crystal quartz.
Versions
Zinc selenide
UHV viewports with zinc selenide optics are typically used in IR applications such as optical temperature measurement or CO₂ lasers. They are also available with AR coatings to increase transmission in the IR range.
Sapphire
Sapphire viewports stand out for the mechanical and chemical resistance of their windows and their high operating temperature, making them ideal for applications in harsh environments.
Crystal quartz, z-cut
High-purity z-cut crystal quartz offers, like fused silica, good transmission in the UV range without corresponding absorption bands in the IR range. Its transmission in the higher µm range also allows THz radiation to be used.
Calcium fluoride
UHV viewports with calcium fluoride windows offer a broad transmission band from the UV to the IR range. Higher-purity calcium fluoride for improved transmission in the deep UV or CF flanges with knife edges on both sides are available on request.
Which component fits?
Nominal diameter, flange type, pressure range and material determine the choice. We advise you, put together components from the entire VACOM range and also source special versions.