摘要
We propose a method to retrieve the angle-dependent strong-field ionization of highest occupied molecular orbital(HOMO)from high-order harmonic generation(HHG)of aligned molecules.This method is based on the single-molecule quantitative rescattering model with known alignment distribution and photo-recombination cross sections of fixed-in-space molecules.With the macroscopic HHG of aligned N2 molecules,we show that angledependent ionization of HOMO can be successfully retrieved at both low and high degrees of alignment.We then show that the error in the retrieved angular dependence of ionization becomes larger if the uncertainty in the alignment distribution is introduced in the retrieval procedure.We also examine that the retrieved ionization of HOMO is much deviated from the accurate one if the intensity of probe laser becomes higher such that inner HOMO-1 can contribute to HHG.
作者
Xiaoli Guo
Cheng Jin
Ziqiang He
Song-Feng Zhao
Xiao-Xin Zhou
Ya Cheng
郭晓丽;金成;何自强;赵松峰;周效信;程亚(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China;Department of Applied Physics,Nanjing University of Science and Technology,Nanjing 210094,China;College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China;Beijing National Laboratory for Condensed Matter Physics,and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China)
基金
Supported by the National Natural Science Foundation of China(Grant Nos.11774175,91950102,11834004,and 91850209)
the National Key Research and Development Program of China(Grant No.2018YFB0504400)
the Science and Technology Commission of Shanghai Municipality(Grant No.18DZ1112700)
the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB16030300)
the Key Research Program of Frontier Sciences of Chinese Academy of Sciences(Grant No.QYZDJ-SSWSLH010)。
