Two-Electron Scenario of High-Order Harmonics Generation by Atom in an Intense Infrared Field and Attosecond Pulse

被引：0
作者：
Romanov, A. A. [1 ,2 ]
Silaev, A. A. [1 ]
Vvedenskii, N. V. [1 ,2 ]
Frolov, M. V. [2 ,3 ]
机构：
[1] Russian Acad Sci, Gaponov Grekhov Inst Appl Phys, Nizhnii Novgorod 603950, Russia
[2] Lobachevsky State Univ Nizhny Novgorod, Nizhnii Novgorod 603950, Russia
[3] Voronezh State Univ, Voronezh 394018, Russia
来源：
JETP LETTERS | 2024年 / 119卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
TARGET;
D O I：
10.1134/S0021364023603950
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The two-electron scenario is proposed for the high-order harmonic generation (HHG) by an atom interacting with an intense infrared field and attosecond pulse. The two-electron dynamics involved in the proposed scenario is realized for the specific attosecond pulse, which can excite the resonance between the valence and deeper shells. Within the numerical solution of the time-dependent Kohn-Sham equations, we analyze the contribution of the single [Phys. Rev. A 98, 063433 (2018)] and two-electron scenarios of HHG by decreasing the duration of attosecond pulse having carrier frequency detuned from the atomic resonance. Favorable conditions are formulated for the realization of a two-electron scenario, which causes the enhancement of the harmonic yield in the spectral range exceeding the cutoff energy of the HHG spectrum in the infrared field.
引用
收藏
页码：179 / 185
页数：7
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