SAMOP 2023 – scientific programme

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MO: Fachverband Molekülphysik

MO 18: Cluster and Experimental Techniques (joint session MO/A)

MO 18.3: Talk

Thursday, March 9, 2023, 15:00–15:15, F142

Investigation of the homogeneous line width of organic molecules attached to rare-gas clusters — •Arne Morlok, Ulrich Bangert, Lukas Bruder, Ylin Li, and Frank Stienkemeier — Institute of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany

Two-dimensional spectroscopy (2DES) is a powerful method to study dynamics of atoms and molecules with a high spectro-temporal resolution. In our group, we apply the technique to doped cluster beams, which act as miniature cryostats for different organic molecules [1,2]. Previous 2DES experiments on phthalocyanine (Pc) on neon clusters allowed resolution of the homogeneous linewidth of Pc and distinguished fluorescence from the C12 and C13 isotope [3]. We extended this investigation in varying the species of the spectroscopic matrix, hence the clusters, and the probed organic molecules. First results are presented, which suggest differences in the homogenous linewidth and coherence times depending on the coupling between dopant and cluster environment.

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

[2] L. Bruder et al., J. Phys. B: At. Mol. Opt. Phys. 52 183501 (2019).

[3] U. Bangert et al., Nat. Commun. 13 3350 (2022).