title: Toward resistant vacuum-ultraviolet coatings for free-electron lasers down to 150 nm.
abstract: Research and development are currently trying to run a storage ring free-electron laser down to 150 nm with robust optics. Vacuum-ultraviolet fluoride optics with protected oxide layers and enhanced metallic mirrors are investigated.
authors.affiliation: Fraunhofer Institut fur Angewandte Optik und Feinmechanik, Albert Einstein Strasse 7, Jena, Germany. a.gatto@zeiss.de
authors.forename: Alexandre
authors.initials: A
authors.lastname: Gatto
authors.forename: Minghong
authors.initials: M
authors.lastname: Yang
authors.forename: Norbert
authors.initials: N
authors.lastname: Kaiser
authors.forename: Stefan
authors.initials: S
authors.lastname: Günster
authors.forename: Detlev
authors.initials: D
authors.lastname: Ristau
authors.forename: Mauro'
authors.initials: M
authors.lastname: Trovo
authors.forename: Miltcho
authors.initials: M
authors.lastname: Danailov