摘要
The strong-field ionization of dimers is investigated theoretically in counter-rotating circularly polarized laser fields.By numerically solving the two-dimensional(2D)time-dependent Schrödinger equation(TDSE)with the single-electron approximation(SEA)frame,we present the photoelectron momentum distributions(PMDs)and photoelectron angular distribution(PADs)of aligned Ne and Xe dimers.It is found that the PMDs and PADs strongly depend on the time delays by counter-rotating circularly polarized laser pulses.The results can be explained by the ultrafast photoionization model and the evolution of electron wave packets for Ne and Xe dimers.Besides,We make a comparison of PMDs between Ne atom and Ne dimer.
作者
雷志仙
徐清芸
杨志杰
何永林
郭静
Zhi-Xian Lei;Qing-Yun Xu;Zhi-Jie Yang;Yong-Lin He;Jing Guo(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China)
基金
supported by the National Natural Science Foundation of China(Grant No.12074146)。