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Main Authors: Vasudevan, Sudheendran, Giesen, Steffen M., Ranecky, Simon T., Marder, Lutz, Vidanović, Igor, Kour, Manjinder, Küstner-Wetekam, Catmarna, Ladda, Nicolas, Das, Sagnik, Rosen, Tonio, Popkova, Vidana, Lee, Hangyeol, Kargin, Denis, Schäfer, Tim, Hans, Andreas, Baumert, Thomas, Berger, Robert, Braun, Hendrike, Ehresmann, Arno, Fuchs, Guido W., Giesen, Thomas F., Mikosch, Jochen, Pietschnig, Rudolf, Senftleben, Arne
Format: Preprint
Published: 2025
Subjects:
Chemical Physics
Online Access:https://arxiv.org/abs/2503.14261
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Table of Contents:
  • Excited electronic states of fenchone, thiofenchone, and selenofenchone are characterized and assigned with different gas-phase spectroscopic methods and \textit{ab initio} quantum chemical calculations. With an increasing atomic number of the chalcogen, we observe increasing bathochromic (red) shifts, which vary in strength for Rydberg states, valence-excited states, and ionization energies. The spectroscopic insight is used to state-resolve the contributions in multi-photon photoelectron circular dichroism with femtosecond laser pulses. This is shown to be a sensitive observable of molecular chirality in all studied chalcogenofenchones. Our work contributes new spectroscopic information, particularly on thiofenchone and selenofenchone. It may open a perspective for future coherent control experiments exploiting resonances in the visible and or near-ultraviolet spectral regions.

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