Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains
Chatterley AS, Christiansen L, Schouder CA, Jørgensen AV, Shepperson B, Cherepanov I, Bighin G, Zillich RE, Lemeshko M, Stapelfeldt H. 2020. Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains. Physical Review Letters. 125(1), 013001.
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Author
Chatterley, Adam S.;
Christiansen, Lars;
Schouder, Constant A.;
Jørgensen, Anders V.;
Shepperson, Benjamin;
Cherepanov, IgorISTA;
Bighin, GiacomoISTA 
;
Zillich, Robert E.;
Lemeshko, MikhailISTA ;
Stapelfeldt, Henrik
;
Zillich, Robert E.;
Lemeshko, MikhailISTA ;
Stapelfeldt, HenrikDepartment
Grant
Abstract
Alignment of OCS, CS2, and I2 molecules embedded in helium nanodroplets is measured as a function
of time following rotational excitation by a nonresonant, comparatively weak ps laser pulse. The distinct
peaks in the power spectra, obtained by Fourier analysis, are used to determine the rotational, B, and
centrifugal distortion, D, constants. For OCS, B and D match the values known from IR spectroscopy. For
CS2 and I2, they are the first experimental results reported. The alignment dynamics calculated from the
gas-phase rotational Schrödinger equation, using the experimental in-droplet B and D values, agree in
detail with the measurement for all three molecules. The rotational spectroscopy technique for molecules in
helium droplets introduced here should apply to a range of molecules and complexes.
Publishing Year
Date Published
2020-07-03
Journal Title
Physical Review Letters
Acknowledgement
H. S. acknowledges support from the European Research Council-AdG (Project No. 320459, DropletControl)
and from The Villum Foundation through a Villum Investigator Grant No. 25886. M. L. acknowledges support
by the Austrian Science Fund (FWF), under Project No. P29902-N27, and by the European Research Council
(ERC) Starting Grant No. 801770 (ANGULON). G. B. acknowledges support from the Austrian Science Fund
(FWF), under Project No. M2641-N27. I. C. acknowledges support by the European Union’s Horizon 2020 research and
innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. Computational resources for
the PIMC simulations were provided by the division for scientific computing at the Johannes Kepler University.
Volume
125
Issue
1
Article Number
013001
ISSN
eISSN
IST-REx-ID
Cite this
Chatterley AS, Christiansen L, Schouder CA, et al. Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains. Physical Review Letters. 2020;125(1). doi:10.1103/PhysRevLett.125.013001
Chatterley, A. S., Christiansen, L., Schouder, C. A., Jørgensen, A. V., Shepperson, B., Cherepanov, I., … Stapelfeldt, H. (2020). Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.125.013001
Chatterley, Adam S., Lars Christiansen, Constant A. Schouder, Anders V. Jørgensen, Benjamin Shepperson, Igor Cherepanov, Giacomo Bighin, Robert E. Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt. “Rotational Coherence Spectroscopy of Molecules in Helium Nanodroplets: Reconciling the Time and the Frequency Domains.” Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/PhysRevLett.125.013001.
A. S. Chatterley et al., “Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains,” Physical Review Letters, vol. 125, no. 1. American Physical Society, 2020.
Chatterley AS, Christiansen L, Schouder CA, Jørgensen AV, Shepperson B, Cherepanov I, Bighin G, Zillich RE, Lemeshko M, Stapelfeldt H. 2020. Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains. Physical Review Letters. 125(1), 013001.
Chatterley, Adam S., et al. “Rotational Coherence Spectroscopy of Molecules in Helium Nanodroplets: Reconciling the Time and the Frequency Domains.” Physical Review Letters, vol. 125, no. 1, 013001, American Physical Society, 2020, doi:10.1103/PhysRevLett.125.013001.
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