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Indexed by:期刊论文

Date of Publication:2017-05-01

Journal:LASER PHYSICS

Included Journals:Scopus、SCIE、EI

Volume:27

Issue:5

ISSN No.:1054-660X

Key Words:molecular orientation; OCS molecule; THz laser pulse

Abstract: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.