title: Noncollinear Polarization Gating of Attosecond Pulse Trains in the Relativistic Regime.
abstract: High order harmonics generated at relativistic intensities have long been recognized as a route to the most powerful extreme ultraviolet pulses. Reliably generating isolated attosecond pulses requires gating to only a single dominant optical cycle, but techniques developed for lower power lasers have not been readily transferable. We present a novel method to temporally gate attosecond pulse trains by combining noncollinear and polarization gating. This scheme uses a split beam configuration which allows pulse gating to be implemented at the high beam fluence typical of multi-TW to PW class laser systems. Scalings for the gate width demonstrate that isolated attosecond pulses are possible even for modest pulse durations achievable for existing and planned future ultrashort high-power laser systems. Experimental results demonstrating the spectral effects of temporal gating on harmonic spectra generated by a relativistic laser plasma interaction are shown.
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Yeung
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Bierbach
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Eckner
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Rykovanov
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Kuschel
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Sävert
authors.affiliation: Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Förster
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.|SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors.forename: C
authors.initials: C
authors.lastname: Rödel
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: G G
authors.initials: GG
authors.lastname: Paulus
authors.affiliation: Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN, United Kingdom.
authors.forename: S
authors.initials: S
authors.lastname: Cousens
authors.affiliation: Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Coughlan
authors.affiliation: Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN, United Kingdom.
authors.forename: B
authors.initials: B
authors.lastname: Dromey
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.|Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Zepf