1. |
- Harth, A., et al.
(författare)
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Few-cycle high-repetition rate OPCPA for multiphoton PEEM towards atto-PEEM
- 2016
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Ingår i: International Conference on Ultrafast Phenomena, UP 2016. - 9781943580187 ; Part F20-UP 2016
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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
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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)
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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)
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Coherence shift to the ground state; a photoprocess explaining long-lived coherences in reaction centers
- 2016
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Ingår i: International Conference on Ultrafast Phenomena, Santa Fe, New Mexico United States 17–22 July 2016. - 9781943580187
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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)
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Slow electrons from intense laser-cluster interactions
- 2016
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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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