title: Coherent high-order harmonic generation by sawtooth-like laser fields.
abstract: We theoretically investigate the high-order harmonic generation driven by sawtooth-like laser fields. It is found that the coherence of the high-order harmonic spectrum could be controlled by adjusting the sawtooth shape parameter α (0 ≤ α ≤ 0.5). With proper α, the intensity of the high-order harmonic spectra come from the electrons with long trajectories can be greatly weakened and the harmonic photons in the plateau burst with high coherence in a broad frequency range. Selecting these harmonics, a phase-stabilized attosecond pulse train with regular pulse structure could be obtained.
authors.affiliation: School of Computer Science and Technology, Jilin Uuniversity, Changchun 130012, China. xiangyang@hpu.edu.cn
authors.forename: Yang
authors.initials: Y
authors.lastname: Xiang
authors.forename: Shufen
authors.initials: S
authors.lastname: Liu
mesh_terms: D003198:Computer Simulation; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D012542:Scattering, Radiation