Interference Effect of Direct Photodetachment for H-Ions in a Short Laser Pulse

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（9）
• 页码范围: 49-52
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/9/093201

摘要

The electron detachment of negative hydrogen ions exposed to a few-cycle linearly polarized laser pulse is investigated in the context of the strong field approximation evaluated by the saddle-point method.The results show that the angular distributions of the laser-induced photoelectron obtained by the saddle-point method are in good agreement with both the experimental results and the numerical-integration results.More importantly,we show that the unusual maximum in the angular distributions of photoelectrons for negative hydrogen ions can be explained by the quantum interference effect based on the saddle-point method.