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Ultrafast Spectroscopy of Atomic and Molecular Quantum Dynamics
Stockholm University, Faculty of Science, Department of Physics.
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

An all-pervading feature of the work presented in this thesis is the study of ultrafast dynamics, both theoretically and experimentally, in terms of time-dependent wave functions (wave packets).

We have experimentally, by pump-probe fluorescence spectroscopy, examined spin-orbit interactions, by time-tracing molecular wave packets on excited states of diatomic rubidium, and the main channels causing the fast predissociation from one of those states is revealed.

The time evolution of wave packets and their extension in space, in addition to varying transition dipole moment is of specific interest in the semiclassically derived expressions for the total ion signal, in the context of pump-probe ionization spectroscopy on diatomic molecules.

We have experimentally, by pump-probe fluorescence spectroscopy, addressed a previously derived theoretical prediction about level interactions between atomic levels with all angular momentum quantum numbers equal but different principal quantum numbers. Hence, the ultrafast progression of atomic radial wave packets are disclosed in terms of quantum beat frequencies and explained theoretically in the context of pump-probe fluorescence spectroscopy.

Preliminary fluorescence up-conversion experiments are as well treated in this thesis with the aim to reveal further experimental knowledge on the previously derived theoretical prediction on the specific level interactions mentioned above.

Place, publisher, year, edition, pages
Stockholm: Fysikum , 2006. , 100 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:su:diva-1252ISBN: 91-7155-314-2 (print)OAI: oai:DiVA.org:su-1252DiVA: diva2:189706
Public defence
2006-09-29, sal FA32, AlbaNova universitetscentrum, Roslagstullsbacken 21, Stockholm, 10:00
Opponent
Supervisors
Available from: 2006-09-01 Created: 2006-09-01Bibliographically approved
List of papers
1. Photoionization of molecular wavepackets - semiclassical treatment of varying transition dipole moment and wavepacket width
Open this publication in new window or tab >>Photoionization of molecular wavepackets - semiclassical treatment of varying transition dipole moment and wavepacket width
Manuscript (Other academic)
Identifiers
urn:nbn:se:su:diva-22899 (URN)
Note
Part of urn:nbn:se:su:diva-1252Available from: 2006-09-01 Created: 2006-09-01 Last updated: 2010-01-13Bibliographically approved
2. Coherent multichannel nonadiabatic dynamics and parallel excitation pathways in the blue-violet absorption band of Rb2
Open this publication in new window or tab >>Coherent multichannel nonadiabatic dynamics and parallel excitation pathways in the blue-violet absorption band of Rb2
Show others...
2002 In: Chemical Physics Letters, Vol. 368, 202-208 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-22900 (URN)
Note
Part of urn:nbn:se:su:diva-1252Available from: 2006-09-01 Created: 2006-09-01Bibliographically approved
3. Isotropic quantum beats: I. Pulsed pump-probe detection
Open this publication in new window or tab >>Isotropic quantum beats: I. Pulsed pump-probe detection
2004 In: The European Physical Journal D, Vol. 31, 121-129 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-22901 (URN)
Note
Part of urn:nbn:se:su:diva-1252Available from: 2006-09-01 Created: 2006-09-01Bibliographically approved

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