@article{oai:oist.repo.nii.ac.jp:00001755,
 author = {Peerzada, Anas R. and Jobson, Callan M. and Kassa, Ezra and Morphew, Jack and Fernandez-Gonzalvo, Xavier and Keller, Matthias},
 journal = {Vacuum},
 month = {Jul},
 note = {In this article we present an investigation of three different fiber optic vacuum feedthroughs. Using Swageloktype tube fittings, metal tubings containing the optical fibers are sealed into a vacuum flange. This allows for easy replacement of the feedthrough without replacing the entire flange. Employing only epoxy resin for sealing the optical fiber into the feedthough we have measured a helium diffusion rate of 2:5.10(-10) mbar . l/s, whereas with a combination of a solderglass and epoxy resin seal we have obtained a diffusion rate below 1.10(-2) mbar . l/s. In a third approach, using small tolerance fiber optic ferrules in our feedthroughs, we have obtained helium diffusion rates of below 1.10(-12) mbar . l/s, making these feedthroughs well suited for ultra-high vacuum applications.},
 title = {Versatile optical fiber feedthroughs for ultra-high vacuum applications},
 volume = {180},
 year = {2020}
}