Relativistic critical density increase and relaxation and high-power pulse propagation

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	Relativistic critical density increase and relaxation and high-power pulse propagation
	Weng, SM ; Mulser, P ; Sheng, ZM
刊名	PHYSICS OF PLASMAS
	2012
卷号	19 期号:2
关键词	ULTRAINTENSE LASER-PULSES OVERDENSE PLASMAS ELECTROMAGNETIC-WAVES INDUCED TRANSPARENCY ULTRA-INTENSE THIN FOIL TARGETS
ISSN号	1070-664X
通讯作者	Weng, SM (reprint author), Osaka Univ, Inst Laser Engn, 2-2 Yamadaoka, Suita, Osaka 5650871, Japan.
中文摘要	High-power laser pulse propagation in an overdense plasma due to the relativistic critical density increase has been investigated in one dimension. In a first step the conditions for the existence of a relativistic critical density are delimited and supported by particle-in-cell simulations. Its accurate determination is made possible by the installation of a new numerical diagnostics. Guided by this we show that the critical density increase strongly depends on both laser polarization and plasma density profile. Further, we find a new relaxation time ranging from several to many laser cycles, which sets a limit for short laser pulse manipulation and tailoring. Paramountly, it is proved that in the power optics domain the pulse propagation velocity is inhibited by the relativistic energy density in the medium and by the efficient reflection, in contrast to the group velocity from standard dispersion optics. (C) 2012 American Institute of Physics. [doi:10.1063/1.3680638]
收录类别	SCI
资助信息	Alexander von Humboldt Foundation; LMU Munchen; ILE in Osaka University; National Natural Science Foundation of China [10734130, 10935002]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52023]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Weng, SM,Mulser, P,Sheng, ZM. Relativistic critical density increase and relaxation and high-power pulse propagation[J]. PHYSICS OF PLASMAS,2012,19(2).
APA	Weng, SM,Mulser, P,&Sheng, ZM.(2012).Relativistic critical density increase and relaxation and high-power pulse propagation.PHYSICS OF PLASMAS,19(2).
MLA	Weng, SM,et al."Relativistic critical density increase and relaxation and high-power pulse propagation".PHYSICS OF PLASMAS 19.2(2012).