Enhancement of High-Order Harmonic Generation in Low-Density Ti Plasma Plumes Induced by Intense Laser Fields

被引：0
|
作者：
Fu, Wufeng [1 ,2 ]
Yu, Jiaqi [1 ,2 ]
Li, Ruiyan [1 ,2 ]
Li, Bo [1 ,2 ]
Lai, Yu Hang [1 ,3 ]
Li, Wei [1 ,2 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, GPL Photon Lab, State Key Lab Luminescence & Applicat, Jilin 130033, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Chinese Univ Hong Kong, Dept Phys, Hong Kong 999077, Peoples R China
来源：
ACS PHOTONICS | 2024年 / 11卷 / 01期
基金：
中国国家自然科学基金;
关键词：
high-order harmonic generation; plasma plumes; multiorder resonance; microscopic effect; extremeultraviolet radiation; nonlinear optics; IONIZATION; CUTOFF;
D O I：
10.1021/acsphotonics.3c00904
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High harmonic generation (HHG) of laser-ablated plasma plumes driven by an intense laser field is an effective method for generating coherent extreme ultraviolet radiation. We investigated the enhancement of high-order harmonics by the interaction of intense laser fields and laser-ablated low-density Ti plasma plumes. By analyzing the mechanism of HHG, the microscopic effect was proved to account for the enhancements of H27-H31. In addition, the density distribution of Ti plasma plumes was estimated and verified that the intensities of different order harmonics were influenced by different regions of Ti plasma plume density. Our results provide a pathway for optimizing the phase-matching conditions of resonant harmonics to improve the harmonic yield by means of controlling the density of laser-ablated plasma plumes (LPPs).
引用
收藏
页码：53 / 59
页数：7
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