Nuclear spin selective laser control of rotational and torsional dynamics

作者：Floss J; Grohmann T; Leibscher M^*; Seideman T

来源：Journal of Chemical Physics, 2012, 136(8): 084309.

DOI：10.1063/1.3687343

• isomerism
• laser beam effects
• librational states
• molecule-photon collisions
• nuclear spin
• rotational states

We explore the possibility of controlling rotational-torsional dynamics of non-rigid molecules with strong, non-resonant laser pulses and demonstrate that transient, laser-induced torsional alignment depends on the nuclear spin of the molecule. Consequently, nuclear spin isomers can be manipulated selectively by a sequence of time-delayed laser pulses. We show that two pulses with different polarization directions can induce either overall rotation or internal torsion, depending on the nuclear spin. Nuclear spin selective control of the angular momentum distribution may open new ways to separate and explore nuclear spin isomers of polyatomic molecules.

• 出版日期2012-2-28
• 单位西北大学