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Sökning: L773:9781943580187

  • Resultat 1-5 av 5
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1.
  • Harth, A., et al. (författare)
  • Few-cycle high-repetition rate OPCPA for multiphoton PEEM towards atto-PEEM
  • 2016
  • Ingår i: International Conference on Ultrafast Phenomena, UP 2016. - 9781943580187 ; Part F20-UP 2016
  • Konferensbidrag (refereegranskat)abstract
    • We present a few-cycle high-repetition rate optical parametric amplifier for multiphoton PEEM experiments on semiconductor nanowires. This parametric amplifier is also used for the generation of high-order harmonics at 200kHz for future atto-PEEM experiments.
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2.
  • Manschwetus, B., et al. (författare)
  • Two-photon double ionization of neon studied with intense attosecond pulse trains
  • 2016
  • Ingår i: International Conference on Ultrafast Phenomena, UP 2016. - 9781943580187 ; Part F20-UP 2016
  • Konferensbidrag (refereegranskat)abstract
    • We focused an intense attosecond pulse train into a neon gas target and observed Ne2+ resulting from two-photon double ionization. By modifying the photon spectrum we find that the process is dominated by the sequential ionization via the Ne+ ion.
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3.
  • Neppl, Stefan, et al. (författare)
  • Probing charge dynamics in bare and dye-sensitized ZnO nanocrystals with time-resolved XPS
  • 2016
  • Ingår i: International Conference on Ultrafast Phenomena, UP 2016. - 9781943580187 ; Part F20-UP 2016
  • Konferensbidrag (refereegranskat)abstract
    • Time-resolved XPS is used to monitor charge carrier dynamics in bare and dyesensitized ZnO nanoparticle films upon sub-bandgap excitation. Results are discussed in the context of impurity-related bandgap states and electron transfer from the chromophore.
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4.
  • Palecek, D., et al. (författare)
  • Coherence shift to the ground state; a photoprocess explaining long-lived coherences in reaction centers
  • 2016
  • Ingår i: International Conference on Ultrafast Phenomena, Santa Fe, New Mexico United States 17–22 July 2016. - 9781943580187
  • Konferensbidrag (refereegranskat)abstract
    • Long-lived coherences have been observed in various biological complexes and their origin is debated. We used polarization-controlled 2D electronic spectroscopy to reveal a photophysical process of coherence shift, explaining coherences in bacterial reaction centers.
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5.
  • Schütte, Bernd, et al. (författare)
  • Slow electrons from intense laser-cluster interactions
  • 2016
  • Ingår i: International Conference on Ultrafast Phenomena, UP 2016. - 9781943580187
  • Konferensbidrag (refereegranskat)abstract
    • A surprisingly dominant contribution of slow electrons is observed following NIR strong-field ionization of clusters. This is consistent with highly efficient intra-Rydberg correlated electronic decay processes, from which the emission of low-energy electrons is expected.
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  • Resultat 1-5 av 5

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