title: Measurement and optimization of isolated attosecond pulse contrast.
abstract: An experimental method is presented to experimentally measure and control the carrier-envelope-phase (CEP)-dependent pulse-energy contrast of isolated attosecond pulses. By scanning the CEP and measuring the photoelectron spectrum produced by the combined action of the attosecond pulses and the high-harmonic driving laser pulses at zero relative time delay, one can extract the pulse-energy ratio between the main attosecond pulse and its neighboring satellite pulses arriving in preceding or subsequent half-cycles of the driver pulse. Moreover, this method allows fast and efficient in situ retrieval of the optimal CEP for high-contrast isolated attosecond pulse generation.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA. tpfeifer@mpi-hd.mpg.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Pfeifer
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Abel
authors.forename: Phillip M
authors.initials: PM
authors.lastname: Nagel
authors.forename: Willem
authors.initials: W
authors.lastname: Boutu
authors.forename: M Justine
authors.initials: MJ
authors.lastname: Bell
authors.forename: Yanwei
authors.initials: Y
authors.lastname: Liu
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Neumark
authors.forename: Stephen R
authors.initials: SR
authors.lastname: Leone