太赫兹脉冲辅助强圆偏振激光脉冲的阈上电离

IF 1.5 4区物理与天体物理 Q3 OPTICS

The European Physical Journal D Pub Date : 2024-10-19 DOI:10.1140/epjd/s10053-024-00920-9

D. Agačević, N. Ibrišimović, D. Škrgić, D. B. Milošević

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引用次数: 0

摘要

我们研究了在强圆极化太赫兹脉冲存在的情况下，强圆极化红外激光脉冲对阈值以上电离的影响。研究表明，通过改变激光脉冲和太赫兹脉冲之间的时间延迟，差分电离概率和最大光电子动能都可以增加或减少一个数量级。数值积分得到的结果与使用修正鞍点法得到的结果非常吻合。所使用的激光和太赫兹脉冲参数在现代实验设施中很容易获得。

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Above-threshold ionization by a strong circularly polarized laser pulse assisted by a terahertz pulse

We investigate how the above-threshold ionization by an intense circularly polarized infrared laser pulse is modified in the presence of a strong circularly polarized terahertz pulse. It is shown that both the differential ionization probability and the maximum photoelectron kinetic energy can be increased or decreased by an order of magnitude by changing the time delay between the laser and terahertz pulses. The results obtained by numerical integration agree well with those obtained using the modified saddle-point method. The used laser and terahertz pulse parameters are readily available at the modern experimental facilities.

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来源期刊

The European Physical Journal D 物理-物理：原子、分子和化学物理

CiteScore

3.10

自引率

11.10%

发文量

213

审稿时长

3 months

期刊介绍： The European Physical Journal D (EPJ D) presents new and original research results in: Atomic Physics; Molecular Physics and Chemical Physics; Atomic and Molecular Collisions; Clusters and Nanostructures; Plasma Physics; Laser Cooling and Quantum Gas; Nonlinear Dynamics; Optical Physics; Quantum Optics and Quantum Information; Ultraintense and Ultrashort Laser Fields. The range of topics covered in these areas is extensive, from Molecular Interaction and Reactivity to Spectroscopy and Thermodynamics of Clusters, from Atomic Optics to Bose-Einstein Condensation to Femtochemistry.