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Controlling the time-dependent dipole response in liquid-phase targets

Costa Castanheira, Carina da

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This thesis focuses on the dynamical changes in the absorption of liquid-phase targets due to the interaction with strong, ultrashort laser pulses. Therefore, it is shown that the absorption spectrum of aluminum chloride phthalocyanine (AlClPc) in the liquid phase can be dynamically modified through the time- resolved interaction with a second laser pulse, which can be explained by laser- induced coherent coupling dynamics between the ground state and an ensemble of excited states, as reproduced by a few-level toy model. Furthermore, it is shown which time-dependent effects upon the measured absorption spectra are generated due to the presence of the solvent and the non-trivial pulse-form itself, which is confirmed through a second simulation. The presented results contribute to a better understanding in how intense laser fields interact with complex molecules in solution and can, in the future, be used to improve dynamic laser-control of complex systems.

Document type: Dissertation
Supervisor: Pfeifer, Prof. Dr. Thomas
Place of Publication: Heidelberg
Date of thesis defense: 25 January 2023
Date Deposited: 01 Feb 2023 08:24
Date: 2023
Faculties / Institutes: The Faculty of Physics and Astronomy > Dekanat der Fakultät für Physik und Astronomie
Service facilities > Max-Planck-Institute allgemein > MPI for Nuclear Physics
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