On the detection of closed orbits in time-dependent systems by using double-pulse lasers

• 作者: M L Du S U Khan
• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2020,（9）
• 所属期刊栏目: ATOMIC, MOLECULAR, OPTICAL (AMO) AND PLASMA PHYSICS, CHEMICAL PHYSICS
• 页码范围: 111-117
• 页数: 7页
• 语种: 英文

摘要

In the photodetachment of atoms or negative ions by a double-pulse laser,the first pulse of the double-pulse laser generates waves and the delayed second pulse may detect them.The phenomenon of the excitation and detection of waves by a double-pulse laser can be used to identify the closed orbits in the system.We demonstrate this phenomenon with a negative hydrogen ion (H-) by analyzing the total population excited by a double-pulse laser in a time-dependent field for different physical parameters.By analyzing the total excited population using a double-pulse laser,we can uncover all the closed orbits existing in the system.We demonstrate that this can be realized by scanning the first pulse position and the time delay between the two pulses.