摘要
We study high-order harmonic generation(HHG)from multi-center asymmetric linear molecules numerically and analytically.Our simulations show that odd and even HHG spectra of the asymmetric multi-center system respond differently to the change of the molecular structure.Specifically,when the internuclear distances between these nuclei of the molecule have a small change,the odd spectra usually do not change basically,but the even spectra differ remarkably.Based on this phenomenon,a simple procedure is proposed to probe the positions of these nuclei with odd–even HHG.Our results shed light on attosecond probing of the structure of multi-center molecules using HHG.
作者
Ning Su
Shujuan Yu
Weiyan Li
Shiping Yang
Yanjun Chen
苏宁;于术娟;李卫艳;杨世平;陈彦军(College of Physics and Information Technology,Shaan'xi Normal University,Xi'an 710119,China;College of Physics and Information Engineering,Hebei Normal University,Shijiazhuang 050024,China;School of Mathematics and Science,Hebei GEO University,Shijiazhuang 050031,China)
基金
Project supported by the National Natural Science Foundation of China(Grants No.91750111)
the Youth Foundation of Hebei Province Education Department,China(Grant No.QN2017028)
the Fundamental Research Funds for Hebei GEO University,China(Grant No.BQ2017047)
the Natural Science Foundation of Hebei Province,China(Grant No.A2015205161)
the Fundamental Research Funds for the Central Universities,China(Grant No.SNNU.GK201801009)
