Ultrafast electron dynamics of a Na4 cluster under resonant femtosecond laser pulse train irradiation

Cong Wang, Ji'An Duan, Lan Jiang, Xiaoyan Sun, Youwang Hu, Jianying Zhou, Hua Wang, Yongfeng Lu

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

In this study, the photoexcitation and ionization of a Na4 cluster under intense femtosecond laser irradiation is investigated using first-principles calculations. The real-time and real-space time-dependent density functional (TDDFT) is applied to describe the electron dynamics during the linear and nonlinear electron-photon interactions, including the dipole response, electron emission, energy absorption and transient electron density distribution. The calculated photoabsorption spectra show good correspondence with the experimental results and the simulations describe well the behavior of the ionization process. The effects of pulse train on electron dynamics are discussed for both the off resonance and on resonance cases. In addition, the time evolutions of experiment-linked probabilities for producing different charged ionic states at various laser conditions are presented.

Original languageEnglish (US)
Article number026001
JournalLaser Physics
Volume25
Issue number2
DOIs
StatePublished - Feb 1 2015

Keywords

  • electron dynamics
  • first-principles calculations
  • resonant ionization

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Condensed Matter Physics
  • Industrial and Manufacturing Engineering

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