title: Tailoring a 67 attosecond pulse through advantageous phase-mismatch.
abstract: A single isolated attosecond pulse of 67 as was composed from an extreme UV supercontinuum covering 55-130 eV generated by the double optical gating technique. Phase mismatch was used to exclude the single-atom cutoff of the spectrum that possesses unfavorable attochirp, allowing the positive attochirp of the remaining spectrum to be compensated by the negative dispersion of a zirconium foil. Two algorithms, PROOF and FROG-CRAB, were employed to retrieve the pulse from the experimental spectrogram, yielding nearly identical results.
authors.affiliation: Department of Physics and CREOL, University of Central Florida, Orlando, Florida 32816, USA.
authors.forename: Kun
authors.initials: K
authors.lastname: Zhao
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.forename: Michael
authors.initials: M
authors.lastname: Chini
authors.forename: Yi
authors.initials: Y
authors.lastname: Wu
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Wang
authors.forename: Zenghu
authors.initials: Z
authors.lastname: Chang