title: Ultra low-loss low-efficiency diffraction gratings.
abstract: The realization of ultra low-loss dielectric reflection gratings with diffraction efficiencies between 7% and 0.02% is presented. By placing the grating beneath the highly reflective layerstack scattering was significantly reduced. This concept allows the all-reflective coupling of high laser radiation to high finesse cavities, thereby circumventing thermal effects caused by absorption in the substrate.
authors.forename: Tina
authors.initials: T
authors.lastname: Clausnitzer
authors.forename: E-B
authors.initials: EB
authors.lastname: Kley
authors.forename: A
authors.initials: A
authors.lastname: Tünnermann
authors.forename: A
authors.initials: A
authors.lastname: Bunkowski
authors.forename: O
authors.initials: O
authors.lastname: Burmeister
authors.forename: K
authors.initials: K
authors.lastname: Danzmann
authors.forename: R
authors.initials: R
authors.lastname: Schnabel
authors.forename: S
authors.initials: S
authors.lastname: Gliech
authors.forename: A
authors.initials: A
authors.lastname: Duparré