Laser Polarization Effect on Molecular Harmonic and Elliptically Polarized Attosecond Pulse Generation

doi:10.1088/0253-6102/67/1/97

	Laser Polarization Effect on Molecular Harmonic and Elliptically Polarized Attosecond Pulse Generation
	Feng, Li-Qiang 1,2; Li, Wen-Liang 4; Liu, Hang 3
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2017
卷号	67 期号:1 页码:97-110
关键词	High-order Harmonic Generation Elliptically Polarized Attosecond Pulse Inhomogeneous Field Resonant Enhanced Peak Two-centre Interference
ISSN号	0253-6102
DOI	10.1088/0253-6102/67/1/97
文献子类	Article
英文摘要	Molecular harmonic spectra of H-2(+) driven by the linearly polarized laser pulses with different polarized angles have been theoretically investigated through solving the two-dimensional time-dependent Schrodinger equation. (i) Below-threshold harmonic spectra show a visible enhanced peak around the 7th harmonic (H7), which produces a red-shift phenomenon as the internuclear distance increased. Theoretical analyses show the red-shift enhanced peak is caused by the laser-induced electron transfer between the ground state and the 1st excited state of H-2(+). (ii) Due to the two-centre interference phenomenon, the above-threshold harmonic spectra exhibit many maxima and minima. (iii) With the introduction of the polarized angle, the anomalous elliptically polarized harmonics can be found. But, with the introduction of the spatial inhomogeneous effect, not only the ellipticities of the harmonics are equal to a stable value of epsilon similar to 0.1-0.3, but also the harmonic cutoffs are extended. As a result, four super-bandwidths of 407 eV, 310 eV, 389 eV, and 581 eV can be obtained. Time profiles of the harmonic generations have been shown to explain the harmonic characteristics. Finally, a series of elliptically polarized (epsilon similar to 0.1-0.3) attosecond X-ray pulses with durations from 18as to 25as can be directly produced through Fourier transformation of the spectral continuum.
WOS关键词	NONLINEAR OPTICS ; FIELDS ; ENHANCEMENT ; UNIPOLAR
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000395425300016
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169488]
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	Liu, Hang
作者单位	1.Liaoning Univ Technol, Coll Sci, 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.Liaoning Univ Technol, Sch Chem & Environm Engn, Jinzhou 121001, Peoples R China 4.Xinjiang Inst Engn, Key Lab Univ, Educ Dept Xinjiang Uygur Autonomous Reg New Energ, Urumqi 830091, Peoples R China
推荐引用方式 GB/T 7714	Feng, Li-Qiang,Li, Wen-Liang,Liu, Hang. Laser Polarization Effect on Molecular Harmonic and Elliptically Polarized Attosecond Pulse Generation[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2017,67(1):97-110.
APA	Feng, Li-Qiang,Li, Wen-Liang,&Liu, Hang.(2017).Laser Polarization Effect on Molecular Harmonic and Elliptically Polarized Attosecond Pulse Generation.COMMUNICATIONS IN THEORETICAL PHYSICS,67(1),97-110.
MLA	Feng, Li-Qiang,et al."Laser Polarization Effect on Molecular Harmonic and Elliptically Polarized Attosecond Pulse Generation".COMMUNICATIONS IN THEORETICAL PHYSICS 67.1(2017):97-110.