title: Coherent spectral enhancement of carrier-envelope-phase stable continua with dual-gas high harmonic generation.
abstract: Attosecond science is enabled by the ability to convert femtosecond near-infrared laser light into coherent harmonics in the extreme ultraviolet spectral range. While attosecond sources have been utilized in experiments that have not demanded high intensities, substantially higher photon flux would provide a natural link to the next significant experimental breakthrough. Numerical simulations of dual-gas high harmonic generation indicate that the output in the cutoff spectral region can be selectively enhanced without disturbing the single-atom gating mechanism. Here, we summarize the results of these simulations and present first experimental findings to support these predictions.
authors.affiliation: Deutsches Elektronensynchrotron (DESY), Hamburg, Germany. arik.willner@desy.de
authors.forename: A
authors.initials: A
authors.lastname: Willner
authors.forename: A
authors.initials: A
authors.lastname: Hage
authors.forename: R
authors.initials: R
authors.lastname: Riedel
authors.forename: I
authors.initials: I
authors.lastname: Grguraš
authors.forename: A
authors.initials: A
authors.lastname: Simoncig
authors.forename: M
authors.initials: M
authors.lastname: Schulz
authors.forename: T
authors.initials: T
authors.lastname: Dzelzainis
authors.forename: H
authors.initials: H
authors.lastname: Höppner
authors.forename: S
authors.initials: S
authors.lastname: Huber
authors.forename: M J
authors.initials: MJ
authors.lastname: Prandolini
authors.forename: B
authors.initials: B
authors.lastname: Dromey
authors.forename: M
authors.initials: M
authors.lastname: Zepf
authors.forename: A L
authors.initials: AL
authors.lastname: Cavalieri
authors.forename: F
authors.initials: F
authors.lastname: Tavella