title: Control the revisit time of the electron wave packet.
abstract: Ionization of molecules by strong laser fields launches an electron wave packet. This electron wave packet, which can be driven back by the field to recollide with the parent ion, has been widely explored to probe the ultrafast nuclear dynamics. We numerically demonstrate the precise control of the temporal characteristic of the recolliding electron wave packet (REWP) by orthogonally polarized two-color fields. Through changing the relative phase of the two fields, the revisit time of REWP can be manipulated with a resolution of less than 200 attos, thus significantly improving the resolution of the well known molecular clock. This provides an efficient method for real-time observation of the ultrafast molecular dynamics with attosecond resolution.
authors.affiliation: Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Yueming
authors.initials: Y
authors.lastname: Zhou
authors.forename: Cheng
authors.initials: C
authors.lastname: Huang
authors.forename: Qing
authors.initials: Q
authors.lastname: Liao
authors.forename: Weiyi
authors.initials: W
authors.lastname: Hong
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu