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Citation: YANG Zeng-Qiang, ZHOU Xiao-Xin. Alignment of N2Molecule by Two-pulse Laser[J]. Acta Physico-Chimica Sinica, ;2007, 23(05): 751-756. doi: 10.3866/PKU.WHXB20070525 shu

Alignment of N2Molecule by Two-pulse Laser

1.
College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, P. R. China; Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, P. R. China

Received Date: 26 September 2006
Available Online: 21 April 2007

Field-free alignment of N2 molecule induced by laser pulse with intensity of 1.5×1014 W·cm-2 and duration of 50 fs was investigated by solving time-dependent Schrodinger equation numerically. The results showed that the alignment could be optimized by dividing the laser pulse into two pulses with same duration. The degree of alignment could be maximumwith an intensity ratio of 0.3636 at the appropriate delay time of the second pulse relative to the peak of the first pulse.
- Two-pulse laser; Molecular alignment; Delay time
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