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

被引:2
|
作者
Magunov, A. I. [1 ,2 ]
Strelkov, V. V. [1 ,3 ]
Yudin, S. N. [4 ]
机构
[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia
[2] All Russia Res Inst Physicotech & Radio Engn Meas, Mendeleyevsk 141570, Moscow Oblast, Russia
[3] Natl Res Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141701, Moscow Oblast, Russia
[4] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
基金
俄罗斯科学基金会;
关键词
high-order harmonic generation; femtosecond laser pulses; multiphoton resonant enhancement; FIELD;
D O I
10.3103/S1541308X23060079
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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 3d(9)4s(2)4p P-1(1) and harmonics that correspond to the multiphoton resonance with the even autoionizing states 3d(10)4p5p S-1(0) and D-1(2) (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.
引用
收藏
页码:418 / 426
页数:9
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