title: Molecular orbital imaging via above-threshold ionization with circularly polarized pulses.
abstract: Above-threshold ionization (ATI) for aligned or orientated linear molecules by circularly polarized laser pulsed is investigated. It is found that the all-round structural information of the molecular orbital is extracted with only one shot by the circularly polarized probe pulse rather than with multi-shot detections in a linearly polarized case. The obtained photoelectron momentum spectrum directly depicts the symmetry and electron distribution of the occupied molecular orbital, which results from the strong sensitivity of the ionization probability to these structural features. Our investigation indicates that the circularly polarized probe scheme would present a simple method to study the angle-dependent ionization and image the occupied electronic orbital.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Xiaosong
authors.initials: X
authors.lastname: Zhu
authors.forename: Qingbin
authors.initials: Q
authors.lastname: Zhang
authors.forename: Weiyi
authors.initials: W
authors.lastname: Hong
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu
authors.forename: Zhizhan
authors.initials: Z
authors.lastname: Xu