强激光脉冲中镓离子产生的高阶谐波

IF 1.1 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

Physics of Wave Phenomena Pub Date : 2023-12-28 DOI:10.3103/S1541308X23060079

A. I. Magunov, V. V. Strelkov, S. N. Yudin

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引用次数: 0

摘要

摘要对强飞秒激光脉冲与单带电镓离子相互作用时产生的高阶谐波频谱进行了理论研究。计算结果揭示了与基态向奇数自电离态 3d94s24p 1P1 转变的频率共振的奇次谐波以及与偶数自电离态 3d104p5p 1S0 和 1D2（暗态）的多光子共振相对应的谐波的增强，并且与它们相差一个激光频率。早先在等离子体羽流的镓靶实验中就观察到了谐波共振增强的效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Generation of High-Order Harmonics by Gallium Ions in Intense Laser Pulse

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Generation of High-Order Harmonics by Gallium Ions in Intense Laser Pulse

The spectrum of high-order harmonics generated in interaction of an intense femtosecond laser pulse with a singly charged gallium ion is theoretically investigated. The results of the calculations reveal enhancement of odd harmonics that are in resonance with the frequency of the transition from the ground state to the odd autoionizing state 3d⁹4s²4p ¹P₁ and harmonics that correspond to the multiphoton resonance with the even autoionizing states 3d¹⁰4p5p ¹S₀ and ¹D₂ (dark states) and are one laser frequency away from them. The effect of resonant enhancement of harmonics was earlier observed in experiments on gallium targets with a plasma plume.

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来源期刊

Physics of Wave Phenomena PHYSICS, MULTIDISCIPLINARY-

CiteScore

2.50

自引率

21.40%

发文量

审稿时长

>12 weeks

期刊介绍： Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.