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arXiv · 1911.12270

The effect of nuclear-quadrupole coupling in the laser induced alignment of molecules

Linda V. Thesing·Andrey Yachmenev·Rosario González-Férez·Jochen Küpper
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Abstract

We present a theoretical study of the time-dependent laser alignment of molecules taking into account the hyperfine coupling due to nuclear-quadrupole interactions. The coupling of nuclear spins to the overall angular momentum of molecules significantly influences their rotational dynamics. Here, we systematically analyze the impact of the nuclear-quadrupole coupling on the rotational dynamics of the linear $\text{I}_2$ and the asymmetric-top diiodobenzene molecule induced by external laser fields. We explore different regimes of pulse shapes and laser-pulse intensities and detail under which conditions the quadrupole coupling cannot be neglected in the description of the laser alignment of molecules.

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Linda V. Thesing, Andrey Yachmenev, Rosario González-Férez, Jochen Küpper. 2020-06-16. The effect of nuclear-quadrupole coupling in the laser induced alignment of molecules. https://doi.org/10.1021/acs.jpca.9b11433

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