title: Amplitude and phase control of attosecond light pulses.
abstract: We report the generation, compression, and delivery on target of ultrashort extreme-ultraviolet light pulses using external amplitude and phase control. Broadband harmonic radiation is first generated by focusing an infrared laser with a carefully chosen intensity into a gas cell containing argon atoms. The emitted light then goes through a hard aperture and a thin aluminum filter that selects a 30-eV bandwidth around a 30-eV photon energy and synchronizes all of the components, thereby enabling the formation of a train of almost Fourier-transform-limited single-cycle 170 attosecond pulses. Our experiment demonstrates a practical method for synthesizing and controlling attosecond waveforms.
authors.affiliation: Department of Physics, Lund Institute of Technology, P. O. Box 118, SE-221 00 Lund, Sweden.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: López-Martens
authors.forename: Katalin
authors.initials: K
authors.lastname: Varjú
authors.forename: Per
authors.initials: P
authors.lastname: Johnsson
authors.forename: Johan
authors.initials: J
authors.lastname: Mauritsson
authors.forename: Yann
authors.initials: Y
authors.lastname: Mairesse
authors.forename: Pascal
authors.initials: P
authors.lastname: Salières
authors.forename: Mette B
authors.initials: MB
authors.lastname: Gaarde
authors.forename: Kenneth J
authors.initials: KJ
authors.lastname: Schafer
authors.forename: Anders
authors.initials: A
authors.lastname: Persson
authors.forename: Sune
authors.initials: S
authors.lastname: Svanberg
authors.forename: Claes-Göran
authors.initials: CG
authors.lastname: Wahlström
authors.forename: Anne
authors.initials: A
authors.lastname: L'huillier