1. Using a 2.1 µm-wavelength, few-cycle laser for high-order harmonic generation the scaling of the conversion to higher photon energies is studied. The measured photoelectron spectra extend well above 1 keV.
2. Employing a loose focusing set-up, based on a high-power near-infrared laser the XUV photon flux per pulse is enhanced by orders of magnitude compared with conventional harmonic sources.
3. With the scheme of
attosecond streaking spectroscopy we measured the shortest available free-electron laser X-ray pulses directly in the time domain on a single-shot basis, yielding an average upper limit for the pulse duration of only a few femtoseconds and even detecting some shots with sub-femtosecond lengths. Combining the ultrahigh photon intensities with the nanoscale spatial and demonstrated attoscale temporal resolution offers an ideal tool for the investigation of light–matter interactions on their natural time scale.
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1. Using a 2.1 µm-wavelength, few-cycle laser for high-order harmonic generation the scaling of the conversion to higher photon energies is studied. The measured photoelectron spectra extend well above 1 keV.
2. Employing a loose focusing set-up, based on a high-power near-infrared laser the XUV photon flux per pulse is enhanced by orders of magnitude compared with conventional harmonic sources.
3. With the scheme of
attosecond streaking spectroscopy we measured the shortest available free-electro...
»