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| 024 | 7 | _ | |a 10.11588/HEIDOK.00034342 |2 doi |
| 024 | 7 | _ | |a urn:nbn:de:bsz:16-heidok-343425 |2 URN |
| 037 | _ | _ | |a PUBDB-2024-06572 |
| 041 | _ | _ | |a English |
| 100 | 1 | _ | |a Borisova, Gergana |0 P:(DE-H253)PIP1030264 |b 0 |e Corresponding author |g female |
| 245 | _ | _ | |a Controlling two-electron systems in their excited state by an intense laser field: Strong-field ionization of atomic helium & Wave-packet manipulation in molecular hydrogen |f 2021-01-16 - 2024-01-16 |
| 260 | _ | _ | |c 2024 |b Heidelberg University Library |
| 300 | _ | _ | |a 196 |
| 336 | 7 | _ | |a Output Types/Dissertation |2 DataCite |
| 336 | 7 | _ | |a DISSERTATION |2 ORCID |
| 336 | 7 | _ | |a PHDTHESIS |2 BibTeX |
| 336 | 7 | _ | |a Thesis |0 2 |2 EndNote |
| 336 | 7 | _ | |a Dissertation / PhD Thesis |b phd |m phd |0 PUB:(DE-HGF)11 |s 1731503333_2146061 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a doctoralThesis |2 DRIVER |
| 502 | _ | _ | |a Dissertation, Universität Heidelberg, 2024 |c Universität Heidelberg |b Dissertation |d 2024 |o 2024-01-16 |
| 520 | _ | _ | |a In this work fundamental light–matter interaction is studied in excited-state two-electron systems under the influence of an intense laser field in two respects: First, motivated by the results of a numerical simulation on the role of initial-state electron correlation for the ionization process, strong-field ionization out of selectively prepared doubly excited states (DESs) in helium is studied in a two-colour extreme ultraviolet (XUV)–infrared (IR) experiment using a reaction microscope (REMI). Detected recoil-ion and photoelectron momentum distributions help to identify a variety of different IR-induced ionization pathways for both single and double ionization out of different DESs as the initial state for strong-field interaction. Turning the focus from the atomic to the molecular two-electron system, in the second study, a novel all-optical approach enables visualisation of the dynamics of a vibrational wave packet in an electronically excited state of neutral H_2 through molecular self-probing by the ground state encoded in the reconstructed time-dependent dipole response of the excited system from XUV spectroscopy data. In a pump–control scheme, an additional interaction with a 5-fs near-infrared (NIR) pulse of adjustable intensity modifies the vibrational wave-packet revival. The adoption of an impulsive control mechanism together with state-resolved extraction of the accumulated strong-field induced phases leading to the observed revival shift brings access to state-dependent polarizability of different vibronic states in the excited wave packet. In future, both experimental approaches can be applied to multi-electron systems to study and control correlation in specifically prepared excited quantum systems. |
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| 650 | _ | 7 | |a 530 Physics |2 Other |
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| 700 | 1 | _ | |a Pfeifer, Thomas |0 P:(DE-H253)PIP1010834 |b 1 |e Thesis advisor |
| 700 | 1 | _ | |a Jochim, Selim |0 P:(DE-HGF)0 |b 2 |e Thesis advisor |
| 773 | _ | _ | |a 10.11588/HEIDOK.00034342 |
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