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论文类型：期刊论文

发表时间：2012-05-25

发表刊物：CHEMICAL PHYSICS

收录刊物：SCIE

卷号：400

页面范围：93-97

ISSN号：0301-0104

关键字：Modulated two-color laser pulse; Phase of envelope; Period of the envelope; Orientation

摘要：We investigate theoretically the field-free molecular orientation driven by a modulated two-color laser pulse together with a delayed half-cycle THz pulse, with the LiH molecule as an example. The field-free molecular orientation and the population of the target state (v = 1, J = 1) are controlled by adjusting the phase of envelope phi and the period T-p of the modulated two-color laser field. At T-p = 7 ps, more molecules are populated to the target state and more efficient molecular orientation is achieved. The effect of temperature on molecular orientation is also discussed. (C) 2012 Elsevier B.V. All rights reserved.