title: Tomographic imaging of asymmetric molecular orbitals with a two-color multicycle laser field.
abstract: We theoretically demonstrate a scheme for tomographic reconstruction of asymmetric molecular orbitals based on high-order harmonic generation with a two-color multicycle laser field. It is shown that by adjusting the relative phase of the two fields, the returning electrons can be forced to recollide from one direction for all the orientations of molecules. Thus, the reconstruction of the asymmetric orbitals can be carried out with multicycle laser field. This releases the stringent requirement of a single-cycle pulse with a stabilized and controllable carrier-envelope phase for the tomographic imaging of asymmetric molecular orbitals.
authors.affiliation: Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Meiyan
authors.initials: M
authors.lastname: Qin
authors.forename: Xiaosong
authors.initials: X
authors.lastname: Zhu
authors.forename: Qingbin
authors.initials: Q
authors.lastname: Zhang
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu