Making the best of mixed-field orientation of polar molecules: a recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses.
Making the best of mixed-field orientation of polar molecules: a recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses.
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充分利用极性分子的混合场取向：在静电场与激光脉冲相结合的情况下实现绝热动力学的秘诀。
DOI：
10.1103/physrevlett.108.193001
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发表时间：
2012
影响因子：
8.6
通讯作者：
R. González
中科院分区：
文献类型：
--
作者：
J. Nielsen;H. Stapelfeldt;J. Küpper;B. Friedrich;J. J. Omiste;R. González
我们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。这些意见充分解释采用绝热和非绝热（随时间变化）模型的计算。
We have experimentally and theoretically investigated the mixed-field orientation of rotational-state-selected OCS molecules and achieved 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 of the mixed-field orientation. These observations are fully explained by calculations employing both adiabatic and nonadiabatic (time-dependent) models.