Journal
SCIENCE ADVANCES
Volume 6, Issue 14, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aaz0682
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Funding
- NRF (National Research Foundation of Korea) - Korean Government [NRF-2015R1A2A2A01005458, NRF2018R1D1A1B07043530, NRF-2017H1A2A1042369]
- Basic Science Institute Research Fund of UNIST (Ulsan National Institute of Science Technology) [1.190120.01]
- National Research Foundation of Korea [2017H1A2A1042369] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We study the effect of rotational state-dependent alignment in the scattering of molecules by optical fields. CS2 molecules in their lowest few rotational states are adiabatically aligned and transversely accelerated by a nonresonant optical standing wave. The width of the measured transverse velocity distribution increases to 160 m/s with the field intensity, while its central peak position moves from 10 to -10 m/s. These changes are well reproduced by numerical simulations based on the rotational state-dependent alignment but cannot be modeled when ignoring these effects. Moreover, the molecular scattering by an off-resonant optical field amounts to manipulating the translational motion of molecules in a rotational state-specific way. Conversely, our results demonstrate that scattering from a nonresonant optical standing wave is a viable method for rotational state selection of nonpolar molecules.
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