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论文类型：期刊论文

发表时间：2017-05-01

发表刊物：LASER PHYSICS

收录刊物：Scopus、SCIE、EI

卷号：27

期号：5

ISSN号：1054-660X

关键字：molecular orientation; OCS molecule; THz laser pulse

摘要：Field-free orientation of OCS molecule is studied theoretically by utilizing two THz laser pulses. The effects of the center frequency of THz laser pulses and the delay time between two THz laser pulses on molecular orientation are discussed. The molecular positive and negative orientation degrees can be changed to some extent by adjusting both the carrier envelope phases of two THz laser pulses. The maximal positive and negative orientation degrees obtained are < cos theta >(pmax) = 0.951 and < cos theta >(nmax) = -0.902, respectively. Furthermore, the influence of the initial rotational temperature on molecular orientation is also investigated.