Intense X-ray isolated attosecond pulse generation by using low-intensity chirped pulse combined with a UV seeding pulse

doi:10.1142/S0217984919502865

	Intense X-ray isolated attosecond pulse generation by using low-intensity chirped pulse combined with a UV seeding pulse
	Li, Yi 1; Castle, R. S.1; Feng, Liqiang 1,2
刊名	MODERN PHYSICS LETTERS B
	2019-08-30
卷号	33 期号:24 页码:17
关键词	Isolated attosecond pulse high-order harmonic generation chirped pulse UV seeding pulse efficiency of HHG
ISSN号	0217-9849
DOI	10.1142/S0217984919502865
通讯作者	Feng, Liqiang(lgfeng_lngy@126.com)
英文摘要	We theoretically investigate intense isolated attosecond pulse (IAP) generation from high-order harmonic generation (HHG) driven by a low-intensity chirped pulse combined with a UV seeding pulse. The results show that, driven by a two-color chirped pulse, the harmonic cutoff can be remarkably extended and a spectral continuum in X-ray region can be obtained. Moreover, as the pulse duration increases or the delay time of the two pulses changes, a larger harmonic cutoff can be found. Further, with the introduction of a UV seeding pulse, the efficiency of HHG can be enhanced by three orders of magnitudes due to the UV resonance ionization. Moreover, as the UV pulse intensity increases, the enhanced ratio of HHG yield can be further improved. The enhancement of HHG yield is related to the pulse duration and delay time of the UV pulse. For instance, when adding a shorter duration UV pulse, the enhancement of HHG is dependent on the delay time of the UV pulse. However, when adding a longer duration UV pulse, the HHG enhancement is not very sensitive to the delay time of the UV pulse. Finally, the obtained spectral continuum supports the generation of intense IAP with the duration of 36 as.
资助项目	National Natural Science Foundation of China[11504151]
WOS关键词	ORDER HARMONIC-GENERATION ; EXTENSION ; H-2(+)
WOS研究方向	Physics
语种	英语
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
WOS记录号	WOS:000484536500005
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173249]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Feng, Liqiang
作者单位	1.Liaoning Univ Technol, Lab Modern Phys, Jinzhou 121000, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Li, Yi,Castle, R. S.,Feng, Liqiang. Intense X-ray isolated attosecond pulse generation by using low-intensity chirped pulse combined with a UV seeding pulse[J]. MODERN PHYSICS LETTERS B,2019,33(24):17.
APA	Li, Yi,Castle, R. S.,&Feng, Liqiang.(2019).Intense X-ray isolated attosecond pulse generation by using low-intensity chirped pulse combined with a UV seeding pulse.MODERN PHYSICS LETTERS B,33(24),17.
MLA	Li, Yi,et al."Intense X-ray isolated attosecond pulse generation by using low-intensity chirped pulse combined with a UV seeding pulse".MODERN PHYSICS LETTERS B 33.24(2019):17.