Size effects and terahertz time-domain spectroscopy of CuO nanocrystals

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	Size effects and terahertz time-domain spectroscopy of CuO nanocrystals
	Fan, HM ; Xu, XL ; Yang, LT ; Wang, L ; Xie, SS ; Zou, BS
刊名	PHYSICS OF LOW-DIMENSIONAL STRUCTURES
	2004
卷号	7-8 页码:65
关键词	OPTICAL PHONONS RAMAN SUPERCONDUCTIVITY CDSE
ISSN号	0204-3467
通讯作者	Fan, HM (reprint author), Chinese Acad Sci, Inst Phys, Nanophys & Nanodevice Lab, Beijing 100080, Peoples R China.
中文摘要	We propose that efficient acceleration of electrons in vacuum and underdense plasmas by an intense laser pulse can be triggered in the presence of another counterpropagating or intersecting laser pulse. This mechanism works when the laser fields exceed some threshold amplitudes for stochastic motion of electrons, as found in single-electron dynamics. Particle-in-cell simulations confirm that electron heating and acceleration in the case with two counterpropagating laser pulses can be much more efficient than with one laser pulse only. Two different diagnoses show that the increased heating and acceleration are caused mainly by direct laser acceleration rather than by plasma waves. In plasma at moderate densities such as a few percent of the critical density and when the underdense plasma region is large enough, the Raman backscattered and side-scattered waves can grow to a sufficiently high level to serve as the second counterpropagating or intersecting pulse and trigger the electron stochastic motion. As a result, even with a single intense laser pulse only in plasma, electrons can be accelerated to an energy level much higher than the corresponding laser ponderomotive potential.
收录类别	SCI
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/311004/52676]
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	Fan, HM,Xu, XL,Yang, LT,et al. Size effects and terahertz time-domain spectroscopy of CuO nanocrystals[J]. PHYSICS OF LOW-DIMENSIONAL STRUCTURES,2004,7-8:65.
APA	Fan, HM,Xu, XL,Yang, LT,Wang, L,Xie, SS,&Zou, BS.(2004).Size effects and terahertz time-domain spectroscopy of CuO nanocrystals.PHYSICS OF LOW-DIMENSIONAL STRUCTURES,7-8,65.
MLA	Fan, HM,et al."Size effects and terahertz time-domain spectroscopy of CuO nanocrystals".PHYSICS OF LOW-DIMENSIONAL STRUCTURES 7-8(2004):65.