title: Displacement metrology with sub-pm resolution in air based on a fs-comb wavelength synthesizer.
abstract: We report on a displacement metrology setup that provides sub-pm resolution in air. The setup is based on a Fabry-Perot cavity. However, unlike current Fabry-Perot cavity based displacement setups we incorporate a novel fs-laser based arbitrary wavelength synthesizer that provides efficient suppression of atmospheric disturbances while providing very wide and precise tuning of the output wavelength. The wavelength synthesizer provides sub-10 attometer wavelength resolution. The setup provides subpm length stability for integration times of up to one minute and sub-10 pm for up to half an hour without airtight enclosure of the Fabry-Perot cavities.
authors.forename: T R
authors.initials: TR
authors.lastname: Schibli
authors.forename: K
authors.initials: K
authors.lastname: Minoshima
authors.forename: Y
authors.initials: Y
authors.lastname: Bitou
authors.forename: F-L
authors.initials: FL
authors.lastname: Hong
authors.forename: H
authors.initials: H
authors.lastname: Inaba
authors.forename: A
authors.initials: A
authors.lastname: Onae
authors.forename: H
authors.initials: H
authors.lastname: Matsumoto