Nonadiabatic laser-induced alignment dynamics of molecules on a surface

article Nonadiabatic laser-induced alignment dynamics of molecules on a surface published yes Lorenz Kranabetter author Henrik H. Kristensen author Areg Ghazaryan author 4AF46FD6-F248-11E8-B48F-1D18A9856A870000-0001-9666-3543 Constant A. Schouder author Adam S. Chatterley author Paul Janssen author Frank Jensen author Robert E. Zillich author Mikhail Lemeshko author 37CB05FA-F248-11E8-B48F-1D18A9856A870000-0002-6990-7802 Henrik Stapelfeldt author MiLe department Angulon: physics and applications of a new quasiparticle project 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. American Physical Society2023 eng Physical Review Letters 0031-9007 1079-7114 2308.15247 37595218 00110178410000110.1103/PhysRevLett.131.053201 1315 L. Kranabetter et al., “Nonadiabatic laser-induced alignment dynamics of molecules on a surface,” Physical Review Letters, vol. 131, no. 5. American Physical Society, 2023. Kranabetter, Lorenz, Henrik H. Kristensen, Areg Ghazaryan, Constant A. Schouder, Adam S. Chatterley, Paul Janssen, Frank Jensen, Robert E. Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt. “Nonadiabatic Laser-Induced Alignment Dynamics of Molecules on a Surface.” Physical Review Letters. American Physical Society, 2023. <a href="https://doi.org/10.1103/PhysRevLett.131.053201">https://doi.org/10.1103/PhysRevLett.131.053201</a>. Kranabetter L, Kristensen HH, Ghazaryan A, et al. Nonadiabatic laser-induced alignment dynamics of molecules on a surface. Physical Review Letters. 2023;131(5). doi:<a href="https://doi.org/10.1103/PhysRevLett.131.053201">10.1103/PhysRevLett.131.053201</a> Kranabetter L, Kristensen HH, Ghazaryan A, Schouder CA, Chatterley AS, Janssen P, Jensen F, Zillich RE, Lemeshko M, Stapelfeldt H. 2023. Nonadiabatic laser-induced alignment dynamics of molecules on a surface. Physical Review Letters. 131(5), 053201. Kranabetter, L., Kristensen, H. H., Ghazaryan, A., Schouder, C. A., Chatterley, A. S., Janssen, P., … Stapelfeldt, H. (2023). Nonadiabatic laser-induced alignment dynamics of molecules on a surface. Physical Review Letters. American Physical Society. <a href="https://doi.org/10.1103/PhysRevLett.131.053201">https://doi.org/10.1103/PhysRevLett.131.053201</a> Kranabetter, Lorenz, et al. “Nonadiabatic Laser-Induced Alignment Dynamics of Molecules on a Surface.” Physical Review Letters, vol. 131, no. 5, 053201, American Physical Society, 2023, doi:<a href="https://doi.org/10.1103/PhysRevLett.131.053201">10.1103/PhysRevLett.131.053201</a>. L. Kranabetter, H.H. Kristensen, A. Ghazaryan, C.A. Schouder, A.S. Chatterley, P. Janssen, F. Jensen, R.E. Zillich, M. Lemeshko, H. Stapelfeldt, Physical Review Letters 131 (2023). 142382023-08-27T22:01:16Z2025-04-14T07:48:54Z