Terahertz waves radiated from two plasma filaments with opposite directions

doi:10.1016/j.optcom.2018.11.053

	Terahertz waves radiated from two plasma filaments with opposite directions
	Du, Hai-Wei 1; Tang, Fu 1,2; Zhang, Dong-Yu 1,3; Mao, Jing-Yi 1
刊名	OPTICS COMMUNICATIONS
	2019-03-15
卷号	435 页码:239-243
关键词	Filaments Opposite directions THz radiation
ISSN号	0030-4018
DOI	10.1016/j.optcom.2018.11.053
通讯作者	Du, Hai-Wei(haiweidu@cigit.ac.cn)
英文摘要	The interaction and the coupling between the plasma filaments introduce some ultrafast phenomena, which not only reveal deep physical mechanisms, but also provide clues to develop the plasma filament-based applications. In this paper, the terahertz (THz) radiation from two plasma filaments with opposite directions, which are produced by focusing two counter propagating femtosecond laser pulses with a pair of off-axis-parabolic mirrors, is measured using electro-optic sampling detection method. The experimental results show that the pre-plasma weakens the THz radiation in the cases of with and without an external biased field. The lifetime of the plasma filament is estimated using the time evolution of the THz peaks. It is found that the THz radiation keeps weaker even when one pump pulse is 300 ps before the other one, which indicates that the lifetime of the plasma filament is longer than 300 ps. In addition, the THz pulses have similar shapes at different time delays between two pump laser pulses. Its underlying physical mechanisms are discussed as well.
资助项目	National Key Basic Research Program of China (973 Program)[2015CB755401] ; Key Project of the Special Fund for Research in Basic Science and Frontier Technology in Chongqing, China[cstc2015jcyjBX0030] ; Innovative Research Fund, China of Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences[Y52A010V10]
WOS研究方向	Optics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000454624400040
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/7243]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Du, Hai-Wei
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Chongqing Univ, Sch Power Engn, Chongqing 400044, Peoples R China 3.Changchun Univ Sci & Technol, Sch Photoelect, Changchun 130022, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Du, Hai-Wei,Tang, Fu,Zhang, Dong-Yu,et al. Terahertz waves radiated from two plasma filaments with opposite directions[J]. OPTICS COMMUNICATIONS,2019,435:239-243.
APA	Du, Hai-Wei,Tang, Fu,Zhang, Dong-Yu,&Mao, Jing-Yi.(2019).Terahertz waves radiated from two plasma filaments with opposite directions.OPTICS COMMUNICATIONS,435,239-243.
MLA	Du, Hai-Wei,et al."Terahertz waves radiated from two plasma filaments with opposite directions".OPTICS COMMUNICATIONS 435(2019):239-243.