title: Single-grating monochromator for extreme-ultraviolet ultrashort pulses.
abstract: Extreme-ultraviolet high-order-harmonic pulses with 1.6·10(7) photons/pulse at 32.5 eV have been separated from multiple harmonic orders by a time-preserving monochromator using a single grating in the off-plane mount. This grating geometry gives minimum temporal broadening and high efficiency. The pulse duration of the monochromatized harmonic pulses has been measured to be in the range 20 to 30 fs when the harmonic process is driven by an intense 30 fs near-infrared pulse. The harmonic photon energy is tunable between 12 and 120 eV. The instrument is used in the monochromatized branch of the Artemis beamline at the Central Laser Facility (UK) for applications in ultrafast electron spectroscopy.
authors: National Research Council of Italy- Institute of Photonics and Nanotechnologies (CNR-IFN), via Trasea 7, 35131-Padova, Italy.
authors: Fabio
authors: F
authors: Frassetto
authors: Cephise
authors: C
authors: Cacho
authors: Chris A
authors: CA
authors: Froud
authors: I C Edmund
authors: IC
authors: Turcu
authors: Paolo
authors: P
authors: Villoresi
authors: Will A
authors: WA
authors: Bryan
authors: Emma
authors: E
authors: Springate
authors: Luca
authors: L
authors: Poletto
mesh_terms: D004867:Equipment Design; D017785:Photons; D046590:Spectroscopy, Electron Energy-Loss / Q000295:instrumentation*; D014466:Ultraviolet Rays