A Time-Distinguished Analysis of the Harmonic Structure from a Model Molecular Ion

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2004,（4）
• 页码范围: 652-655
• 页数: 4页
• 语种: 英文

摘要

We present high-order harmonic generation spectra resulted from a single-electron model molecular ion exposed to intense laser fields by numerically solving a one-dimensional time-dependent Schrodinger equation. There are three plateaus in the spectra and the maximal cutoff energy is Ip + 8.5Up, when the inter-nuclear distance R equals πα0/2. Here Ip is the ionization potential and Up = E02/(4ω2) is the ponderomotive potential with E0 and ω being the laser electric field amplitude and the central frequency. The harmonic structures are well interpreted by a modified three-step model in which the effects of the electron reflected by the non-parent ion are stressed.