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Open Access Article

Physical Science and Technical Research. 2025; 5: (1) ; 28-32 ; DOI: 10.12208/j.pstr.20250004.

Investigation of Rabi oscillations in strong-field ionization of atomic lithium
锂原子强场电离中的拉比振荡研究

作者: 王顺 *

仲恺农业工程学院自动化学院 广东广州

*通讯作者: 王顺,单位:仲恺农业工程学院自动化学院 广东广州;

发布时间: 2025-03-31 总浏览量: 161

摘要

本文通过精确数值求解全维含时薛定谔方程和使用Tóth等人提出的三态理论模型,研究了锂原子在强激光脉冲作用下的电离过程中的拉比振荡现象。全维方程的计算可以产生明显的单光子拉比振荡,并持续数个周期,证明了我们的全维计算方法的精确可靠。三态模型的计算从两个不同的角度实现了双光子拉比振荡。但是,这种双光子拉比振荡在全维量子计算中无法复现,表明此时三态模型是失效的,Tóth等人提出的利用光电子能谱中的动态干涉图样探测电离过程中的拉比振荡的方案也是不可行的。

关键词: 拉比振荡;动态干涉;强场电离

Abstract

In this Letter, Rabi oscillations in the ionization of lithium atoms subject to strong laser pulses are studied by accurately numerically solving the full-dimensional time-dependent Schrödinger equation and by using the three-state theoretical model Tóth et al. proposed. Calculations of the full equation produce pronounced single-photon Rabi oscillations, which last several cycles, demonstrating that our method for the full-dimensional calculations is precise and reliable. Calculations of the three-state model realize the double-photon Rabi oscillations from two distinct perspectives. However, this type of double-photon Rabi oscillations cannot be reproduced in the full-dimensional quantum calculations, proving that the three-state model is invalid here, and that the scheme devised by Tóth et al. for probing the Rabi oscillations in the ionization through the dynamic interference patterns in the photoelectron energy spectra is infeasible.

Key words: Rabi oscillation; Dynamic interference; Strong-field ionization

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引用本文

王顺, 锂原子强场电离中的拉比振荡研究[J]. 物理科学与技术研究, 2025; 5: (1) : 28-32.