title: Temporal Structure of Attosecond Pulses from Laser-Driven Coherent Synchrotron Emission.
abstract: The microscopic dynamics of laser-driven coherent synchrotron emission transmitted through thin foils are investigated using particle-in-cell simulations. For normal incidence interactions, we identify the formation of two distinct electron nanobunches from which emission takes place each half-cycle of the driving laser pulse. These emissions are separated temporally by 130 as and are dominant in different frequency ranges, which is a direct consequence of the distinct characteristics of each electron nanobunch. This may be exploited through spectral filtering to isolate these emissions, generating electromagnetic pulses of duration ∼70  as.
authors.affiliation: Centre for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
authors.forename: S
authors.initials: S
authors.lastname: Cousens
authors.affiliation: Centre for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
authors.forename: B
authors.initials: B
authors.lastname: Reville
authors.affiliation: Centre for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
authors.forename: B
authors.initials: B
authors.lastname: Dromey
authors.affiliation: Centre for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.|Helmholtz Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Zepf