Spectra introduces a series of fibre optic vacuum feedthroughs for
end-point detection, plasma emission spectroscopy, and other applications.
Both single-fibre and
multi-fibre bundles are sealed within vacuum-tight flanges which are
designed to pass directly through vacuum chamber walls with maximum
helium leak rates of 10-11 cm3/sec (torr), and no additional optical
loss. The feedthroughs are helium leak tested and certified. Many
versions of the UV-Vis-NIR assemblies are available.