title: Enhanced narrow-bandwidth emission during high-order harmonic generation from aligned molecules.
abstract: We theoretically investigate the selective enhancement of high-harmonic generation (HHG) in a small spectral range when an orthogonal-polarized two-color laser field interacts with aligned O(2) molecules. It is shown clearly that the enhanced narrow-bandwidth emission near the cutoff of the HHG spectrum can be effectively controlled by the molecular alignment angle, laser intensity and the relative phase of two-color laser fields. Furthermore, the strong dependence of narrow-bandwidth HHG on molecular alignment angle indicates that it encodes information about O(2) molecular orbitals, so it may be an alternative method for reconstruction of O(2) molecular orbitals.
authors.affiliation: School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China. chaojinzhang@163.com
authors.forename: Chaojin
authors.initials: C
authors.lastname: Zhang
authors.forename: Jinping
authors.initials: J
authors.lastname: Yao
authors.forename: Fadhil A
authors.initials: FA
authors.lastname: Umran
authors.forename: Jielei
authors.initials: J
authors.lastname: Ni
authors.forename: Bin
authors.initials: B
authors.lastname: Zeng
authors.forename: Guihua
authors.initials: G
authors.lastname: Li
authors.forename: Di
authors.initials: D
authors.lastname: Lin
mesh_terms: D003198:Computer Simulation; D007834:Lasers; D008956:Models, Chemical; D008968:Molecular Conformation; D010100:Oxygen / Q000737:chemistry* / Q000528:radiation effects*; D012542:Scattering, Radiation
chemical_list: D010100:Oxygen