title: Generating Isolated Elliptically Polarized Attosecond Pulses Using Bichromatic Counterrotating Circularly Polarized Laser Fields.
abstract: We theoretically demonstrate the possibility to generate both trains and isolated attosecond pulses with high ellipticity in a practical experimental setup. The scheme uses circularly polarized, counterrotating two-color driving pulses carried at the fundamental and its second harmonic. Using a model Ne atom, we numerically show that highly elliptic attosecond pulses are generated already at the single-atom level. Isolated pulses are produced by using few-cycle drivers with controlled time delay between them.
authors.affiliation: Department of Physics, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom and Max-Born-Institute, Max-Born Strasse 2A, D-12489 Berlin, Germany.
authors.forename: Lukas
authors.initials: L
authors.lastname: Medišauskas
authors.affiliation: Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom.
authors.forename: Jack
authors.initials: J
authors.lastname: Wragg
authors.affiliation: Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom.
authors.forename: Hugo
authors.initials: H
authors.lastname: van der Hart
authors.affiliation: Max-Born-Institute, Max-Born Strasse 2A, D-12489 Berlin, Germany Department of Physics, Humboldt University, Newtonstrasse 15, D-12489 Berlin, Germany and Department of Physics, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom.
authors.forename: Misha Yu
authors.initials: MY
authors.lastname: Ivanov