title: Ellipticity-tunable attosecond XUV pulse generation with a rotating bichromatic circularly polarized laser field.
abstract: We propose and theoretically demonstrate a method to generate attosecond XUV pulses with tunable ellipticity from aligned molecules irradiated by a bichromatic counterrotating circularly polarized (BCCP) driving laser field. By rotating the BCCP field, the attoseond XUV pulse varies from being left elliptically polarized to right elliptically polarized. The rotation of the BCCP field can be easily achieved by adjusting the relative phases between the two circularly polarized components. This scheme will benefit a broad range of applications, including the exploration of chiral-sensitive properties of the light-matter interaction and time-resolved imaging of magnetic structures.
authors.forename: Xiaofan
authors.initials: X
authors.lastname: Zhang
authors.forename: Xiaosong
authors.initials: X
authors.lastname: Zhu
authors.forename: Xi
authors.initials: X
authors.lastname: Liu
authors.forename: Dian
authors.initials: D
authors.lastname: Wang
authors.forename: Qingbin
authors.initials: Q
authors.lastname: Zhang
authors.forename: Pengfei
authors.initials: P
authors.lastname: Lan
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu