title: Compression of high-energy laser pulses below 5 fs.
abstract: High-energy 20-fs pulses generated by a Ti:sapphire laser system were spectrally broadened to more than 250 nm by self-phase modulation in a hollow fiber filled with noble gases and subsequently compressed in a broadband high-throughput dispersive system. Pulses as short as 4.5 fs with energy up to 20-microJ were obtained with krypton, while pulses as short as 5 fs with energy up to 70 microJ were obtained with argon. These pulses are, to our knowledge, the shortest generated to date at multigigawatt peak powers.
authors.forename: M
authors.initials: M
authors.lastname: Nisoli
authors.forename: S
authors.initials: S
authors.lastname: De Silvestri
authors.forename: O
authors.initials: O
authors.lastname: Svelto
authors.forename: R
authors.initials: R
authors.lastname: Szipöcs
authors.forename: K
authors.initials: K
authors.lastname: Ferencz
authors.forename: C
authors.initials: C
authors.lastname: Spielmann
authors.forename: S
authors.initials: S
authors.lastname: Sartania
authors.forename: F
authors.initials: F
authors.lastname: Krausz