Applied Physics Letters · 2001 · 34 citations · 17 references
EngineeringCopper FilmLaser-plasma InteractionRelativistic PlasmaHigh-power LasersElectron OpticHigh-energy PhotonsRadiation GenerationElectron SpectroscopyOptical PropertiesPulse PowerRelativistic ElectronsUltra-short LasersUltrafast LasersFree Electron LaserFree-electron LasersPhysicsRelativistic Laser-matter InteractionAtomic PhysicsUltrafast Laser Physics43-Fs-laser PulsesSynchrotron RadiationNatural SciencesSpectroscopyApplied PhysicsFast ElectronsMagnetic SpectrometerUltrafast Optics
The energy spectra of fast electrons produced by ultrashort, high-intensity laser pulses were directly measured using a magnetic spectrometer with an imaging plate. The typical temperature was 350 keV for irradiation on 30 μm thick copper film by pulses of width 43 fs, intensity 2.7×1018 W/cm2, repetition rate 10 Hz without artificial prepulses and was found to be close to the ponderomotive potential. In addition, the energy spectra of high-energy photons, which are expected to be produced from the electrons, were calculated.
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