Note: Mounting ultra-high vacuum windows with low stress-induced birefringence

Neal Solmeyer, Kunyan Zhu, David S. Weiss

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


We have developed a way to mount ultra-high vacuum windows onto standard ConFlat® vacuum systems with very low stress-induced birefringence. Each window is sealed to a stainless steel flange with a compressed indium wire, and that flange is connected to a vacuum chamber with another indium seal. We find that deformation of a standard ConFlat flange during indium sealing dominates the stress on the window, so an extra-rigid flange is needed for minimal birefringence. With this mounting scheme, the typical residual birefringence is δn = 2.3 10-7 and is unchanged by a 120 C bake.

Original languageEnglish (US)
Article number066105
JournalReview of Scientific Instruments
Issue number6
StatePublished - Jun 2011

All Science Journal Classification (ASJC) codes

  • Instrumentation


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