Field-free orientation dynamics of OCS molecule induced by utilizing two THz laser pulses. (11th April 2017)

• Record Type: Journal Article
• Authors: Zhang, You-De; Wang, Shuo; Zhan, Wei-Shen; Yang, Jian; Jing, Da
• Is Part Of: Laser physics. Volume 27:Number 5(2017:May)
• Publication Date: 2017-04-11
• Subjects: molecular orientation -- OCS molecule -- THz laser pulse; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1555-6611/aa698a
• Languages: English
• ISSNs: 1054-660X

Abstract

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 ⁡ θ ⟩ p m a x = 0.951 and ⟨ cos ⁡ θ ⟩ n m a x = − 0.902, respectively. Furthermore, the influence of the initial rotational temperature on molecular orientation is also investigated.