Symmetry Breaking and Strong Persistent Plasma Currents via Resonant Destabilization of Atoms

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Brée, C.; Hofmann, M.; Demircan, A.; Morgner, U.; Kosareva, O. et al.: Symmetry Breaking and Strong Persistent Plasma Currents via Resonant Destabilization of Atoms. In: Physical Review Letters 119 (2017), Nr. 24, 243202. DOI: https://doi.org/10.1103/PhysRevLett.119.243202

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Abstract: 
The ionization rate of an atom in a strong optical field can be resonantly enhanced by the presence of long-living atomic levels (so-called Freeman resonances). This process is most prominent in the multiphoton ionization regime, meaning that the ionization event takes many optical cycles. Nevertheless, here, we show that these resonances can lead to rapid subcycle-scale plasma buildup at the resonant values of the intensity in the pump pulse. The fast buildup can break the cycle-to-cycle symmetry of the ionization process, resulting in the generation of persistent macroscopic plasma currents which remain after the end of the pulse. This, in turn, gives rise to a broadband radiation of unusual spectral structure, forming a comb from terahertz to visible. This radiation contains fingerprints of the attosecond electron dynamics in Rydberg states during ionization. © 2017 American Physical Society.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 71 84.52%
2 image of flag of Russian Federation Russian Federation 5 5.95%
3 image of flag of China China 3 3.57%
4 image of flag of United States United States 2 2.38%
5 image of flag of No geo information available No geo information available 1 1.19%
6 image of flag of Turkey Turkey 1 1.19%
7 image of flag of Portugal Portugal 1 1.19%

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