title: Generation of sub-3 fs pulses in the deep ultraviolet.
abstract: We demonstrate generation and measurement of intense deep-ultraviolet light pulses with a duration of approximately 2.8 fs (FWHM of the intensity envelope) and a wavelength distribution between 230 and 290 nm. They emerge via direct frequency upconversion of sub-4 fs laser pulses of a carrier wavelength of approximately 750 nm focused into an Ne-filled, quasi-static gas cell. Dispersion-free, third-order autocorrelation measurements provide access to their temporal intensity profile.
authors.affiliation: Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany.
authors.forename: Florentin
authors.initials: F
authors.lastname: Reiter
authors.forename: Ulrich
authors.initials: U
authors.lastname: Graf
authors.forename: Martin
authors.initials: M
authors.lastname: Schultze
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Schweinberger
authors.forename: Hartmut
authors.initials: H
authors.lastname: Schröder
authors.forename: Nicholas
authors.initials: N
authors.lastname: Karpowicz
authors.forename: Abdallah Mohammed
authors.initials: AM
authors.lastname: Azzeer
authors.forename: Reinhard
authors.initials: R
authors.lastname: Kienberger
authors.forename: Ferenc
authors.initials: F
authors.lastname: Krausz
authors.forename: Eleftherios
authors.initials: E
authors.lastname: Goulielmakis