Resolving Strong Field Dynamics in Cation States of CO_2 via Optimised Molecular Alignment

2014
ISBN: 978-3-319-05337-0
Verlag: Springer International Publishing

Buch, Englisch, 205 Seiten, HC runder Rücken kaschiert, Format (B × H): 160 mm x 241 mm, Gewicht: 4616 g

Reihe: Springer Theses

This thesis presents an experimental study of the ultrafast molecular dynamics of CO_2^+ that are induced by a strong, near-infrared, femtosecond laser pulse. In particular, typical strong field phenomena such as tunneling ionisation, nonsequential double ionisation and photo-induced dissociation are investigated and controlled by employing an experimental technique called impulsive molecular alignment. Here, a first laser pulse fixes the molecule in space, such that the molecular dynamics can be studied as a function of the molecular geometry with a second laser pulse. The experiments are placed within the context of the study and control of ultrafast molecular dynamics, where sub-femtosecond (10^-15 seconds) resolution in ever larger molecular systems represents the current frontier of research. The thesis presents the required background in strong field and molecular physics, femtosecond laser architecture and experimental techniques in a clear and accessible language that does not require any previous knowledge in these fields.

Zielgruppe

Research

Autoren/Hrsg.

Oppermann, Malte

Fachgebiete

• Naturwissenschaften Physik Angewandte Physik Chemische Physik
• Naturwissenschaften Physik Quantenphysik Atom- und Molekülphysik
• Naturwissenschaften Physik Elektromagnetismus Quantenoptik, Nichtlineare Optik, Laserphysik

Inhaltsverzeichnis

Introduction.- Molecules in Strong Laser Fields.- Lasers.- Experimental Methods and Setup.- Characterisation and Optimisation of Impulsive Molecular Alignment in Mixed Gas Samples.-Multichannel Contributions in Nonsequential Double Ionisation of CO2.- Strong eld control of dissociative excitation in CO2+.- Conclusion.