Strong-field-gated buildup of a Rydberg series
The femtosecond-timescale formation of a Fano resonance in doubly excited helium has been recently observed, enabling a time-domain view into two-electron correlation dynamics. Measuring the absorption spectral line shape, the buildup of the resonance is revealed by imposing a temporal gate on the d...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.032041 |
| _version_ | 1797211365506547712 |
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| author | Veit Stooß Paul Birk Alexander Blättermann Maximilian Hartmann Gergana D. Borisova Christian Ott Thomas Pfeifer |
| author_facet | Veit Stooß Paul Birk Alexander Blättermann Maximilian Hartmann Gergana D. Borisova Christian Ott Thomas Pfeifer |
| author_sort | Veit Stooß |
| collection | DOAJ |
| description | The femtosecond-timescale formation of a Fano resonance in doubly excited helium has been recently observed, enabling a time-domain view into two-electron correlation dynamics. Measuring the absorption spectral line shape, the buildup of the resonance is revealed by imposing a temporal gate on the dipole response using strong-field ionization. Here, we apply this approach to the Rydberg series of the doubly excited states in helium. This reveals the characteristic times of emergence of isolated two-electron resonances from the continuous single-ionization background absorption, as well as their time-dependent line-shape asymmetry and the time it takes to separate individual spectral absorption lines within the series. Furthermore, we time resolve the dynamics of the excited wave packet by reconstructing its dipole response in the time domain and thereby characterize the ionization gate to close as fast as only 1.2 fs. These results represent an approach to resolve on the femtosecond and attosecond timescale the strong-field-ionization dynamics of excited coherent wave packets. |
| first_indexed | 2024-04-24T10:25:20Z |
| format | Article |
| id | doaj.art-dd3814619af446a09140ed5ad16e6eb6 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:25:20Z |
| publishDate | 2020-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-dd3814619af446a09140ed5ad16e6eb62024-04-12T16:59:01ZengAmerican Physical SocietyPhysical Review Research2643-15642020-08-012303204110.1103/PhysRevResearch.2.032041Strong-field-gated buildup of a Rydberg seriesVeit StooßPaul BirkAlexander BlättermannMaximilian HartmannGergana D. BorisovaChristian OttThomas PfeiferThe femtosecond-timescale formation of a Fano resonance in doubly excited helium has been recently observed, enabling a time-domain view into two-electron correlation dynamics. Measuring the absorption spectral line shape, the buildup of the resonance is revealed by imposing a temporal gate on the dipole response using strong-field ionization. Here, we apply this approach to the Rydberg series of the doubly excited states in helium. This reveals the characteristic times of emergence of isolated two-electron resonances from the continuous single-ionization background absorption, as well as their time-dependent line-shape asymmetry and the time it takes to separate individual spectral absorption lines within the series. Furthermore, we time resolve the dynamics of the excited wave packet by reconstructing its dipole response in the time domain and thereby characterize the ionization gate to close as fast as only 1.2 fs. These results represent an approach to resolve on the femtosecond and attosecond timescale the strong-field-ionization dynamics of excited coherent wave packets.http://doi.org/10.1103/PhysRevResearch.2.032041 |
| spellingShingle | Veit Stooß Paul Birk Alexander Blättermann Maximilian Hartmann Gergana D. Borisova Christian Ott Thomas Pfeifer Strong-field-gated buildup of a Rydberg series Physical Review Research |
| title | Strong-field-gated buildup of a Rydberg series |
| title_full | Strong-field-gated buildup of a Rydberg series |
| title_fullStr | Strong-field-gated buildup of a Rydberg series |
| title_full_unstemmed | Strong-field-gated buildup of a Rydberg series |
| title_short | Strong-field-gated buildup of a Rydberg series |
| title_sort | strong field gated buildup of a rydberg series |
| url | http://doi.org/10.1103/PhysRevResearch.2.032041 |
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