Revealing plasma oscillation in THz spectrum from laser plasma of molecular jet

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 强场激光物理国家重点实验室

	Revealing plasma oscillation in THz spectrum from laser plasma of molecular jet
	Xu, Zhizhan; Li, Ruxin; Liu, Peng; Miao, Tianshi; Bai, Ya; Li, Na
刊名	Opt. Express
	2016
卷号	24 期号:20 页码:23009
通讯作者	peng@siom.ac.cn
英文摘要	Contribution of plasma oscillation to the broadband terahertz (THz) emission is revealed by interacting two-color (omega/2 omega) laser pulses with a supersonic jet of nitrogen molecules. Temporal and spectral shifts of THz waves are observed as the plasma density varies. The former owes to the changing refractive index of the THz waves, and the latter correlates to the varying plasma frequency. Simulation of considering photocurrents, plasma oscillation and decaying plasma density explains the broadband THz spectrum and the varying THz spectrum. Plasma oscillation only contributes to THz waves at low plasma density owing to negligible plasma absorption. At the longer medium or higher density, the combining effects of plasma oscillation and absorption results in the observed low-frequency broadband THz spectra. (C) 2016 Optical Society of America
收录类别	SCI
资助信息	National Natural Science Foundation of China [11274326, 61521093, 61405222, 11134010, 11127901]; Shanghai Yangfan Program [14YF1406200]
WOS记录号	WOS:000387543000063
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/28705]
专题	上海光学精密机械研究所_强场激光物理国家重点实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Xu, Zhizhan,Li, Ruxin,Liu, Peng,et al. Revealing plasma oscillation in THz spectrum from laser plasma of molecular jet[J]. Opt. Express,2016,24(20):23009.
APA	Xu, Zhizhan,Li, Ruxin,Liu, Peng,Miao, Tianshi,Bai, Ya,&Li, Na.(2016).Revealing plasma oscillation in THz spectrum from laser plasma of molecular jet.Opt. Express,24(20),23009.
MLA	Xu, Zhizhan,et al."Revealing plasma oscillation in THz spectrum from laser plasma of molecular jet".Opt. Express 24.20(2016):23009.