Laser parameters effects of pump-probe pulse on improvements of spectral continuum and attosecond pulse signal from H-2(+)

doi:10.1140/epjd/e2019-90512-7

	Laser parameters effects of pump-probe pulse on improvements of spectral continuum and attosecond pulse signal from H-2(+)
	Liu, Hang 1,2; Feng, Rich-Liqiang 1,2; Kapteyn, Henry J.1,3
刊名	EUROPEAN PHYSICAL JOURNAL D
	2019-08-16
卷号	73 期号:8 页码:12
关键词	Optical Phenomena and Photonics
ISSN号	1434-6060
DOI	10.1140/epjd/e2019-90512-7
通讯作者	Kapteyn, Henry J.(attophys1101@gmail.com)
英文摘要	Generally, by properly choosing the delay time of the pump-probe field, the harmonic yield from H-2(+) can be enhanced due to the charge-resonance-enhanced-ionization. In this paper, through controlling the laser parameters of pump-probe pulse, the improvements of spectral continuum and attosecond pulse signal from H-2(+) have been further investigated. For the case of controlling pump pulse, it is found that the harmonic yield of H-2(+) can be enhanced as the pump pulse duration increases. However, as the pump wavelength increases, although the harmonic cutoff can be extended, the harmonic yield is decreased. Furthermore, when the carrier envelope phase of pump pulse is chosen to be 1.0 pi, the intensity of spectral continuum can be further enhanced slightly. For the case of controlling probe pulse, it is shown that the harmonic cutoff can be extended when the probe pulse duration increases. Moreover, by properly adding a down-chirp in the probe pulse, the harmonic cutoff can be further extended, showing a broader spectral continuum with a stable intensity. Furthermore, with the introduction of inhomogeneous effect of the laser field, a larger harmonic cutoff can be found and a spectral continuum with a bandwidth of 116 eV can be obtained. Moreover, the signal of this spectral continuum is only contributed by a single harmonic emission peak. Finally, through the Fourier transformation of some selected harmonics on this spectral continuum, a single attosecond pulse with the duration of 48 as can be obtained.
资助项目	National Natural Science Foundation of China[11504151]
WOS关键词	ORDER HARMONIC-GENERATION
WOS研究方向	Optics ; Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000480566300003
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/321008/173459]
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	Kapteyn, Henry J.
作者单位	1.Liaoning Univ Technol, Lab Mol React Dynam, Jinzhou 121001, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 3.Marmara Univ, Dept Chem & Environm Engn, TR-34722 Istanbul, Turkey
推荐引用方式 GB/T 7714	Liu, Hang,Feng, Rich-Liqiang,Kapteyn, Henry J.. Laser parameters effects of pump-probe pulse on improvements of spectral continuum and attosecond pulse signal from H-2(+)[J]. EUROPEAN PHYSICAL JOURNAL D,2019,73(8):12.
APA	Liu, Hang,Feng, Rich-Liqiang,&Kapteyn, Henry J..(2019).Laser parameters effects of pump-probe pulse on improvements of spectral continuum and attosecond pulse signal from H-2(+).EUROPEAN PHYSICAL JOURNAL D,73(8),12.
MLA	Liu, Hang,et al."Laser parameters effects of pump-probe pulse on improvements of spectral continuum and attosecond pulse signal from H-2(+)".EUROPEAN PHYSICAL JOURNAL D 73.8(2019):12.