title: Extreme ultraviolet Fourier-transform spectroscopy with high order harmonics.
abstract: We demonstrate a new scheme for extreme ultraviolet (xuv) Fourier-transform spectroscopy based on the generation of two phase-locked high-harmonic beams. It allows us to measure for the first time interferograms at wavelengths as short as 90 nm, and open the perspective of performing high-resolution Fourier-transform absorption spectroscopy in the xuv. Our measurements also demonstrate that a precise control of the relative phase of harmonic pulses can be obtained with an accuracy on an attosecond time scale, of importance for future xuv pump-xuv probe attosecond spectroscopy.
authors.affiliation: CEA/DSM/DRECAM/SPAM, bât. 522, Centre d'Etudes de Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: M
authors.initials: M
authors.lastname: Kovacev
authors.forename: S V
authors.initials: SV
authors.lastname: Fomichev
authors.forename: E
authors.initials: E
authors.lastname: Priori
authors.forename: Y
authors.initials: Y
authors.lastname: Mairesse
authors.forename: H
authors.initials: H
authors.lastname: Merdji
authors.forename: P
authors.initials: P
authors.lastname: Monchicourt
authors.forename: P
authors.initials: P
authors.lastname: Breger
authors.forename: J
authors.initials: J
authors.lastname: Norin
authors.forename: A
authors.initials: A
authors.lastname: Persson
authors.forename: A
authors.initials: A
authors.lastname: L'Huillier
authors.forename: C-G
authors.initials: CG
authors.lastname: Wahlström
authors.forename: B
authors.initials: B
authors.lastname: Carré
authors.forename: P
authors.initials: P
authors.lastname: Salières