title: Low-energy photoelectrons in strong-field ionization by laser pulses with large ellipticity.
abstract: The 3D photoelectron momentum distributions created by the strong-field ionization of argon atoms and naphthalene molecules with intense, large ellipticity (∼0.7) femtosecond laser pulses are studied. The experiment reveals the presence of low-energy electrons for randomly oriented naphthalene, but not for argon. Our theory shows that the induced dipole part of the cationic potential facilitates the creation of the low-energy electrons. We establish the conditions in terms of laser pulse parameters and molecular properties for which this type of low-energy electrons can be observed and point to applications thereof.
authors.affiliation: Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187 Dresden, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Dimitrovski
authors.affiliation: Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark.
authors.forename: J
authors.initials: J
authors.lastname: Maurer
authors.affiliation: Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark.
authors.forename: H
authors.initials: H
authors.lastname: Stapelfeldt
authors.affiliation: Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark.
authors.forename: L B
authors.initials: LB
authors.lastname: Madsen