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Nonadiabatic laser-induced alignment dynamics of molecules on a surface

We demonstrate that a sodium dimer, Na2(13Σ+u), residing on the surface of a helium nanodroplet, can be set into rotation by a nonresonant 1.0 ps infrared laser pulse. The time-dependent degree of alignment measured, exhibits a periodic, gradually decreasing structure that deviates qualitatively fro...

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Main Authors: Kranabetter, Lorenz (Author) , Kristensen, Henrik H. (Author) , Ghazaryan, Areg (Author) , Schouder, Constant A. (Author) , Chatterley, Adam S. (Author) , Janßen, Paul (Author) , Jensen, Frank (Author) , Zillich, Robert E. (Author) , Lemeshko, Mikhail (Author) , Stapelfeldt, Henrik (Author)
Format: Article (Journal)
Language:English
Published: 2 August 2023
In: Physical review letters
Year: 2023, Volume: 131, Issue: 5, Pages: 1-6
ISSN:1079-7114
DOI:10.1103/PhysRevLett.131.053201
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.131.053201
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.131.053201
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Author Notes:Lorenz Kranabetter, Henrik H. Kristensen, Areg Ghazaryan, Constant A. Schouder, Adam S. Chatterley, Paul Janssen, Frank Jensen, Robert E. Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt
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Summary:We demonstrate that a sodium dimer, Na2(13Σ+u), residing on the surface of a helium nanodroplet, can be set into rotation by a nonresonant 1.0 ps infrared laser pulse. The time-dependent degree of alignment measured, exhibits a periodic, gradually decreasing structure that deviates qualitatively from that expected for gas-phase dimers. Comparison to alignment dynamics calculated from the time-dependent rotational Schrödinger equation shows that the deviation is due to the alignment dependent interaction between the dimer and the droplet surface. This interaction confines the dimer to the tangential plane of the droplet surface at the point where it resides and is the reason that the observed alignment dynamics is also well described by a 2D quantum rotor model.
Item Description:Gesehen am 13.05.2024
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.131.053201

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