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MO: Fachverband Molekülphysik

MO 6: Poster I

MO 6.5: Poster

Tuesday, March 7, 2023, 16:30–19:00, Empore Lichthof

Phase-modulated transient-absorption spectroscopy in the liquid phase — •Jakob Gerlach, Yilin Li, Arne Morlok, Ulrich Bangert, Frank Stienkemeier, and Lukas Bruder — Institute of Physics, University of Freiburg, Germany

In our group a setup for two-dimensional electronic spectroscopy has previously been developed and used to study dynamics of nanosystems trapped in helium nanodroplets [1]. The action-detected spectroscopy is based on phase modulation of the laser pulses [2]. Many processes relevant in the field of photochemistry take place in a liquid environment, which significantly impacts the investigated dynamics. Therefore, a new setup is assembled to allow the examination of a probe in the liquid phase using transient-absorption spectroscopy. We plan to combine this setup with the phase modulation technique in order to improve the signal-to-noise. The design of the setup and a first characterization of its implementation will be presented.

[1] L. Bruder et al., Nat Commun 9, 4823 (2018).

[2] P. F. Tekavec, G. A. Lott, and A. H. Marcus, J. Chem. Phys. 127, 214307 (2007).