title: Single isolated attosecond pulse from multicycle lasers.
abstract: We propose a new experimental scheme to produce clean isolated pulses lasting a few hundreds of attoseconds. It is based on high harmonics generation and uses the polarization gating technique combined with the ionization dynamics and the spatial filtering provided by the three-dimensional field propagation. The proposed method is easy to implement, robust against laser parameter fluctuations, and shows to be effective up to a 25 fs pulse duration.
authors.affiliation: CNISM--Dipartimento di Scienze Fisiche, Universita di Napoli Federico II, Napoli, Italy.
authors.forename: Carlo
authors.initials: C
authors.lastname: Altucci
authors.forename: Rosario
authors.initials: R
authors.lastname: Esposito
authors.forename: Valer
authors.initials: V
authors.lastname: Tosa
authors.forename: Raffaele
authors.initials: R
authors.lastname: Velotta