Effects of laser-plasma interactions on terahertz radiation from solid targets irradiated by ultrashort intense laser pulses

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	Effects of laser-plasma interactions on terahertz radiation from solid targets irradiated by ultrashort intense laser pulses
	Li, Chun 1; Zhou, Mu-Lin 1; Ding, Wen-Jun 1; Du, Fei 1; Liu, Feng 1; Li, Yu-Tong 1; Wang, Wei-Min 1; Sheng, Zheng-Ming 1,2,3; Ma, Jing-Long 1; Chen, Li-Ming 1
刊名	PHYSICAL REVIEW E
	2011-09-09
卷号	84 期号:3 页码:036405
关键词	ELECTROMAGNETIC PULSES OPTICAL RECTIFICATION GENERATION TECHNOLOGY SUBPICOSECOND EMISSION BEAM AIR
ISSN号	1539-3755
英文摘要	Interactions of 100-fs laser pulses with solid targets at intensities of 10(18) W/cm(2) and resultant terahertz (THz) radiation are studied under different laser contrast ratio conditions. THz emission is measured in the specular reflection direction, which appears to decrease as the laser contrast ratio varies from 10(-8) to 10(-6). Correspondingly, the frequency spectra of the reflected light are observed changing from second harmonic dominant, three-halves harmonic dominant, to vanishing of both harmonics. Two-dimensional particle-in-cell simulation also suggests that this observation is correlated with the plasma density scale length change. The results demonstrate that the THz emission is closely related to the laser-plasma interaction processes. The emission is strong when resonance absorption is a key feature of the interaction, and becomes much weaker when parametric instabilities dominate.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Fluids & Plasmas ; Physics, Mathematical
研究领域[WOS]	Physics
关键词[WOS]	ELECTROMAGNETIC PULSES ; OPTICAL RECTIFICATION ; GENERATION ; TECHNOLOGY ; SUBPICOSECOND ; EMISSION ; BEAM ; AIR
收录类别	SCI
语种	英语
WOS记录号	WOS:000294947200011
公开日期	2012-08-07
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/4426]
专题	紫金山天文台_毫米波和亚毫米波技术实验室
作者单位	1.CAS, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 2.Shanghai Jiao Tong Univ, Key Lab Laser Plasmas, Minist Educ China, Shanghai 200240, Peoples R China 3.Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Li, Chun,Zhou, Mu-Lin,Ding, Wen-Jun,et al. Effects of laser-plasma interactions on terahertz radiation from solid targets irradiated by ultrashort intense laser pulses[J]. PHYSICAL REVIEW E,2011,84(3):036405.
APA	Li, Chun.,Zhou, Mu-Lin.,Ding, Wen-Jun.,Du, Fei.,Liu, Feng.,...&Zhang, Jie.(2011).Effects of laser-plasma interactions on terahertz radiation from solid targets irradiated by ultrashort intense laser pulses.PHYSICAL REVIEW E,84(3),036405.
MLA	Li, Chun,et al."Effects of laser-plasma interactions on terahertz radiation from solid targets irradiated by ultrashort intense laser pulses".PHYSICAL REVIEW E 84.3(2011):036405.