Theoretical exploration of asymmetric molecular harmonic emission and attosecond pulse generation in the presence of spatially inhomogeneous plasmon-enhanced field

doi:10.1080/00268976.2016.1192233

	Theoretical exploration of asymmetric molecular harmonic emission and attosecond pulse generation in the presence of spatially inhomogeneous plasmon-enhanced field
	Feng, Liqiang 1,2,3
刊名	MOLECULAR PHYSICS
	2016
卷号	114 期号:15 页码:2217-2231
关键词	Molecular High-order Harmonics Spatially Inhomogeneous Field Attosecond Pulses
ISSN号	0026-8976
DOI	10.1080/00268976.2016.1192233
文献子类	Article
英文摘要	Asymmetric molecular harmonic generation from HeH2+ ion in the presence of the spatially inhomogeneous plasmon-enhanced field has been theoretically investigated by solving the two-dimensional non-Born-Oppenheimer time-dependent Schrodinger equation (both the electron and nuclear motions are considered only along the laser polarisation axis). It shows that (1) for the normal homogeneous field, the harmonic cut-off from the asymmetric molecule is beyond the classical harmonic cut-off energy from the atom (I-p + 3.17 U-p). Further analyses show that the multi-channels ionisation-recombination process is responsible for the harmonic extension. (2) For the spatially inhomogeneous plasmon-enhanced field, the harmonic cut-off can be further enhanced, and an optimal 3.0 dB enhanced field with a 482 eV supercontinuum has been obtained. Quantum time-frequency harmonic analyses have been shown to explain the harmonic characteristics and the harmonic extension process. (3) Initial vibrational state and isotopic effects show that intense harmonics can be generated from higher initial vibrational state and the heavier molecule. Finally, by properly superposing the harmonics, a series of sub-30 as attosecond pulses can be obtained.
WOS关键词	WAVE-PACKET
WOS研究方向	Physics
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000380541500001
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170328]
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian, Peoples R China 2.Liaoning Univ Technol, Coll Sci, Jinzhou, Peoples R China 3.Liaoning Univ Technol, Sch Chem & Environm Engn, Jinzhou, Peoples R China
推荐引用方式 GB/T 7714	Feng, Liqiang. Theoretical exploration of asymmetric molecular harmonic emission and attosecond pulse generation in the presence of spatially inhomogeneous plasmon-enhanced field[J]. MOLECULAR PHYSICS,2016,114(15):2217-2231.
APA	Feng, Liqiang.(2016).Theoretical exploration of asymmetric molecular harmonic emission and attosecond pulse generation in the presence of spatially inhomogeneous plasmon-enhanced field.MOLECULAR PHYSICS,114(15),2217-2231.
MLA	Feng, Liqiang."Theoretical exploration of asymmetric molecular harmonic emission and attosecond pulse generation in the presence of spatially inhomogeneous plasmon-enhanced field".MOLECULAR PHYSICS 114.15(2016):2217-2231.