title: 16-fs, 1-microJ ultraviolet pulses generated by third-harmonic conversion in air.
abstract: We describe a simple method for generating sub-20-fs ultraviolet light pulses with useful average powers, using a kilohertz Ti:sapphire laser system. By focusing a 22-fs, 1-mJ laser pulse in air, we obtain ultraviolet pulses with an energy of 1 microJ and at a wavelength of 266 nm and with an average power of 1 mW. The pulse duration of the ultraviolet pulses was measured to be 16 fs with frequency-resolved optical gating.
authors.forename: S
authors.initials: S
authors.lastname: Backus
authors.forename: J
authors.initials: J
authors.lastname: Peatross
authors.forename: Z
authors.initials: Z
authors.lastname: Zeek
authors.forename: A
authors.initials: A
authors.lastname: Rundquist
authors.forename: G
authors.initials: G
authors.lastname: Taft
authors.forename: M M
authors.initials: MM
authors.lastname: Murnane
authors.forename: H C
authors.initials: HC
authors.lastname: Kapteyn