Attosecond Optical and Electronic Wave Packets
Summary, in English
The first series of experiments was focused on the generation, control and characterization of high-order harmonics on the femtosecond time-scale, corresponding to the duration of the driving pulse. The time-frequency structure of individual harmonics does not significantly affect the properties of the individual attosecond pulses, but is, however, important for the overall structure of the APT, which is also the subject of some theoretical investigations included in this work.
In the second series of experiments, the production and measurement of attosecond pulses in an APT were successfully performed. In addition, external phase control of the attosecond pulses was demonstrated, by means of metallic filters, leading to post-compression of the pulses down to a duration of 170 as, which was, at that time, the shortest pulse duration ever reported.
Finally, the APTs were applied to inject electron wave packets (EWPs), through single-photon ionization, into an external low-frequency laser field. By using the pulses in the APT to obtain precise timing of the ionization, control of the ejected EWPs, and even of the ionization process itself, by the external field, was demonstrated. It has also been shown that, making use of the external control offered by the APTs, it is possible to perform interference experiments on continuum EWPs, in a way very similar to that of traditional interference experiments with photons.
- Atom and Molecular Physics and Optics
- Ionization Dynamics
- Electron Wave Packet Interferometry
- Electron Wave Packet Control
- Pulse Characterization
- High-Order Harmonics
- Attosecond Pulse Trains
- Atom- och molekylärfysik
- Atomic and molecular physics
- Anne L'Huillier
- ISBN: 978-91-628-6898-7
8 September 2006
Sal B Fysiska Institutionen Professorsgatan 1 Lund
- Paul Corkum (Dr)