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arXiv 1204.2685physics.chem-phquant-ph
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充分利用极性分子的混合场取向:在静电场与laser脉冲相结合的情况下实现绝热动力学的方法

Making the best of mixed-field orientation of polar molecules: A recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses

Jens H. Nielsen, Henrik Stapelfeldt, Jochen Küpper, Bretislav Friedrich, Juan J. Omiste, Rosario González-Férez

摘要:

我们已经从实验和理论上研究了旋转态选择OCS分子的混合场取向,并获得了很强的取向度。所施加的中等强度的纳秒激光脉冲足够长以使分子精确地对准。然而,在弱直流电场的组合,相同的激光脉冲的混合场取向的非绝热动力学的结果。这些意见充分解释计算采用,绝热和非绝热的时间依赖模型。

英文摘要:

We have experimentally and theoretically investigated the mixed-field orientation of rotational-state-selected OCS molecules and we achieve strong degrees of alignment and orientation. The applied moderately intense nanosecond laser pulses are long enough to adiabatically align molecules. However, in combination with a weak dc electric field, the same laser pulses result in nonadiabatic dynamics in the mixed-field orientation. These observations are fully explained by calculations employing, both, adiabatic and non-adiabatic time-dependent models.

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