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Abstract
Within this work, electron dynamics in atoms are experimentally and numerically investigated on their natural attosecond time scales. To access these dynamics, ultrashort and moderately intense few-cycle laser pulses are superposed with attosecond pulsed radiation in the extreme-ultraviolet spectral region In particular, a bound two-electron wave packet in helium on attosecond time scales was experimentally observed. A novel experiment is presented to simultaneously measure resonant photoabsorption spectra of laser-coupled doubly excited states in helium and the streaked photoelectron spectra. It provides the advantage of obtaining an absolute calibration of the time-delay zero for absorption spectra, where delay-dependent phase information is extracted.
Document type: | Dissertation |
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Supervisor: | Pfeifer, Prof. Dr. Thomas |
Place of Publication: | Heidelberg |
Date of thesis defense: | 13 December 2023 |
Date Deposited: | 14 Feb 2024 13:57 |
Date: | 2024 |
Faculties / Institutes: | The Faculty of Physics and Astronomy > Dekanat der Fakultät für Physik und Astronomie |
Controlled Keywords: | attosecond physics, attosecond streaking, time-resolved spectroscopy |