Physikalische Chemie - Direktor: Prof. Dr. Martin Wolf
Department Seminar
Host: T. Kampfrath
Monday, February 5, 2018, 11:00 am
All are invited to meet around 10:40 am for a chat with coffee & cookies.
PC Seminar Room, G 2.06, Faradayweg 4
Dr. Janne Savolainen
Laser spectroscopy and Biophotonics, Faculty of chemistry and biochemistry, Ruhr-Universität Bochum
Nonlinear THz Spectroscopy on Water and Solutions
PCseminarabstr_180205
A wealth of elementary excitations in condensed matter, which involve nuclear motions (translations, intra- and intermolecular vibrations) and low-frequency electronic intraband transitions, lie in the THz spectral range. Implementing time-resolved and non-linear spectroscopies that directly probe these transitions is a challenge that is finally coming to realization. The non-equilibrium dynamics of the mentioned low-frequency motions have high relevance for understanding structural dynamics, relaxation processes and energy dissipation in liquids. In this contribution we follow ultrafast electron ejection in neat water as well as probe hydrogen-bonding network dynamics of water and aqueous salt solutions.
A wealth of elementary excitations in condensed matter, which involve nuclear motions (translations, intra- and intermolecular vibrations) and low-frequency electronic intraband transitions, lie in the THz spectral range. Implementing time-resolved and non-linear spectroscopies that directly probe these transitions is a challenge that is finally coming to realization. The non-equilibrium dynamics of the mentioned low-frequency motions have high relevance for understanding structural dynamics, relaxation processes and energy dissipation in liquids. In this contribution we follow ultrafast electron ejection in neat water as well as probe hydrogen-bonding network dynamics of water and aqueous salt solutions.