title: How key periodic orbits drive recollisions in a circularly polarized laser field.
abstract: We show that a family of key periodic orbits drives the recollision process in a strong circularly polarized laser field. These orbits, coined recolliding periodic orbits, exist for a wide range of parameters, and their relative influence changes as the laser and atomic parameters are varied. We find the necessary conditions for recollision-driven nonsequential double ionization to occur. The outlined mechanism is universal in that it applies equally well beyond atoms: The internal structure of the target species plays a minor role in the recollision process.
authors.affiliation: School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA.
authors.forename: A
authors.initials: A
authors.lastname: Kamor
authors.forename: F
authors.initials: F
authors.lastname: Mauger
authors.forename: C
authors.initials: C
authors.lastname: Chandre
authors.forename: T
authors.initials: T
authors.lastname: Uzer