title: Attosecond circular dichroism spectroscopy of polyatomic molecules.
abstract: We describe the roles of multiple electronic continua in high-harmonic generation from aligned molecules. First, we show how the circularity of emitted harmonics tracks the interplay of different electronic continua participating in the nonlinear response. Second, we show that the interplay of different continua can lead to large variations of harmonic phases. Finally, we show how multiple electronic continua allow one to shape the polarization of high harmonics and attosecond pulses.
authors.affiliation: National Research Council, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada.
authors.forename: Olga
authors.initials: O
authors.lastname: Smirnova
authors.forename: Serguei
authors.initials: S
authors.lastname: Patchkovskii
authors.forename: Yann
authors.initials: Y
authors.lastname: Mairesse
authors.forename: Nirit
authors.initials: N
authors.lastname: Dudovich
authors.forename: David
authors.initials: D
authors.lastname: Villeneuve
authors.forename: Paul
authors.initials: P
authors.lastname: Corkum
authors.forename: Misha Yu
authors.initials: MY
authors.lastname: Ivanov