DICP OpenIR
Waveform control in generations of intense water window attosecond pulses via multi-color combined field
Li, Liang1; Zheng, Mian1; Feng, R. Liqiang1,2; Qiao, Yan2,3
Corresponding AuthorFeng, R. Liqiang(lqfeng1101@gmail.com) ; Qiao, Yan(qiaoyan_07@126.com)
KeywordHigh-order harmonic generation attosecond pulse generation spatial inhomogeneous field superposed initial state multi-color combined field
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS B
2019-05-20
ISSN0217-9792
DOI10.1142/S0217979219501303
Volume33Issue:13Pages:23
Funding ProjectNational Natural Science Foundation of China[11504151]
Funding OrganizationNational 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
WOS SubjectPhysics, Applied ; Physics, Condensed Matter ; Physics, Mathematical
WOS Research AreaPhysics
WOS KeywordORDER HARMONIC-GENERATION ; BROAD-BAND SUPERCONTINUUM ; FREE-ELECTRON LASER ; H-2(+) ; DRIVEN ; GAS
AbstractThe waveform control in the improvements of high-order harmonic generation (HHG) spectra and attosecond pulse signals driven by the two-color and three-color combined fields has been theoretically investigated. (a) The results show that by properly controlling the omega-2 omega two-color laser beam (including the modulations of chirps, carrier envelope phases and delay time), either the harmonic cutoff can be extended, showing a water window spectral continuum, or the selective enhancement of the single-order and two-order harmonics can be found. Further, with the introduction of a third controlling field, the efficiency of spectral continuum can be enhanced by two orders of magnitude compared with that from the two-color field. Moreover, the enhancement of HHG is not very sensitive to the frequency of the third field (i.e., the frequency of the third field is chosen to be 3 omega, 4 omega and 6 omega). Thus, some water window attosecond pulses with the durations of 60 as can be obtained. (b) Furthermore, the harmonic cutoff can be further extended when using a half-cycle controlling pulse or introducing the inhomogeneous effect of the laser field. Moreover, the efficiency of HHG can be further improved when the initial state is prepared as the superposition state of the ground state and some excited state of He atom. Consequently, a much broader spectral continuum with an intensity enhancement of another two orders of magnitude can be found. Finally, through the Fourier transformation of some spectral continuum, the intense water window attosecond pulses with the durations of 60 as can be produced.
Language英语
Funding OrganizationNational 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
WOS IDWOS:000469831800010
PublisherWORLD SCIENTIFIC PUBL CO PTE LTD
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Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/172167
Collection中国科学院大连化学物理研究所
Corresponding AuthorFeng, R. Liqiang; Qiao, Yan
Affiliation1.Liaoning Univ Technol, Lab Mol React Dynam, Jinzhou 121000, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
3.Zhengzhou Univ, Basic Med Coll, Dept Pathophysiol, Zhengzhou 450001, Henan, Peoples R China
Recommended Citation
GB/T 7714
Li, Liang,Zheng, Mian,Feng, R. Liqiang,et al. Waveform control in generations of intense water window attosecond pulses via multi-color combined field[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B,2019,33(13):23.
APA Li, Liang,Zheng, Mian,Feng, R. Liqiang,&Qiao, Yan.(2019).Waveform control in generations of intense water window attosecond pulses via multi-color combined field.INTERNATIONAL JOURNAL OF MODERN PHYSICS B,33(13),23.
MLA Li, Liang,et al."Waveform control in generations of intense water window attosecond pulses via multi-color combined field".INTERNATIONAL JOURNAL OF MODERN PHYSICS B 33.13(2019):23.
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