Resonance-like enhancement in high-order above threshold ionization of atoms and molecules in intense laser fields | Zendy

Bobin Li | Zendy; Shilin Hu | Zendy; Zheng Shu | Zendy; X. T. He | Zendy; Jing Chen | Zendy

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Resonance-like enhancement in high-order above threshold ionization of atoms and molecules in intense laser fields

Author(s) -

Bobin Li,

Shilin Hu,

Zheng Shu,

X. T. He,

Jing Chen

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.013012

Subject(s) - ionization , atomic physics , excited state , resonance (particle physics) , excitation , laser , physics , molecule , spectral line , optics , ion , quantum mechanics

We investigate the high-order above-threshold ionization (HATI) of atoms (Ar and Xe) and molecules (N 2 and O 2 ) subjected to strong laser fields by numerically solving time-dependent Schrödinger equation. It is demonstrated that resonance-like enhancement of groups of adjacent peaks in photoelectron spectrum of HATI is observed for Ar, Xe, and N 2 , while this peculiar phenomenon is absent for O 2 , which is in agreement with experimental observation [ Phys. Rev. A88, 021401 (2013)]. In addition, analysis indicates that resonance-like enhancement in HATI spectra of atoms and molecules is closely related to excitation of the high-lying excited states.

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