Numerical Simulation on HHG Spectra of Two-Electron H+3 Model
DAI Chun-yan, YU Chuan, ZHANG Gui-zhong*, YAO Jian-quan
College of Precision Instrument and Optoelectronics Engineering, Key Lab of Optoelectronic Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
Abstract:The authors present a one-dimensional calculation model of H+3, and the time-dependent wavefunction was obtained by the symmetric split-operator method. The authors investigated the high-order harmonic generation (HHG) properties of H+3 model exposed to 800 nm-wavelength ultrashort laser pulse. The effect of electron interaction on the HHG spectra is less profound than at the cut-off frequency. We also calculated the HHG spectra for different internuclear separation values close to realistic one. Most of the calculated cutoff frequencies are beyond the three-step model’s prediction, and a preliminary scenario is suggested.
Key words:HHG;H+3 system;Three-step model;Wavepacket energy
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