Coherent control of interfering wave packets in dissociating HD+ molecules: the role of phase and delay time. (17th December 2015)

• Record Type: Journal Article
• Authors: Qin, Chaochao; Zhang, Lili; Qiu, Xuejun; Zhang, Xianzhou; Liu, Yufang
• Is Part Of: Laser physics. Volume 26:Number 2(2016:Feb.)
• Publication Date: 2015-12-17
• Subjects: coherent control -- interfering wave packets; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1054-660X/26/2/025301
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: The coherent control of interference between dissociating wave packets of the HD + molecules generated by a pair of time-delayed and phase-locked femtosecond laser pulses is theoretically studied by using the time-dependent quantum wave packet method. The density function in both coordinate and momentum representation are presented and discussed. It is demonstrated that the interference pattern is observed in both coordinate and momentum density functions. The interference undergoes a π -phase shift when the delay time between the two phase-locked femtosecond laser pulses is changed by half an optical period. In particular, the number of interference fringes, the fringe spacing in the R -dependent density distribution | ψ ( R )| 2, and the modulation period of the energy-dependent distribution of the fragments P ( E ) can be tuned by two phase-locked femtosecond pulses.