Effects of Laser Plasma Formation on Quasi-Phase Matching of High-Order Harmonics from Nanoparticles and Atoms

doi:10.3390/nano9040572

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	Effects of Laser Plasma Formation on Quasi-Phase Matching of High-Order Harmonics from Nanoparticles and Atoms
	R.A.Ganeev; G.S.Boltaev; V.V.Kim; C.L.Guo
	2019
发表期刊	Nanomaterials
ISSN	2079-4991
卷号	9 期号:4 页码:12
摘要	The application of nanoparticles (NPs) and quasi-phase matching (QPM) each play an important role in the enhancement of high-order harmonics (HHG) of ultrashort laser pulses. We analyze various regimes of nanoparticle plasma formation for the creation conditions for maximal QPM-induced enhancement of the groups of harmonics in the extreme ultraviolet (XUV). Laser plasmas were formed on the surfaces of NPs- and microparticle (MPs)-contained targets using ablation by nanosecond, picosecond, and femtosecond pulses. Different conditions of laser plasma formation (extended and perforated plasma) and variable concentrations of free electrons in these three cases of laser ablation led to modifications of QPM conditions. We demonstrate novel approaches in the optimization of QPM at the conditions of laser ablation of NPs and MPs by pulses of different durations. The formation of QPM conditions using femtosecond and picosecond heating pulses during HHG in such plasmas allowed the growth of conversion efficiency of the groups of harmonics, with the enhancement factors exceeding 25x in different ranges of XUV, contrary to less efficient QPM in the case of nanosecond pulse-induced ablation.
关键词	nanoparticles,microparticles,quasi-phase matching,high-order harmonic,generation,laser-produced plasma
DOI	10.3390/nano9040572
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收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63382
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	R.A.Ganeev,G.S.Boltaev,V.V.Kim,et al. Effects of Laser Plasma Formation on Quasi-Phase Matching of High-Order Harmonics from Nanoparticles and Atoms[J]. Nanomaterials,2019,9(4):12.
APA	R.A.Ganeev,G.S.Boltaev,V.V.Kim,&C.L.Guo.(2019).Effects of Laser Plasma Formation on Quasi-Phase Matching of High-Order Harmonics from Nanoparticles and Atoms.Nanomaterials,9(4),12.
MLA	R.A.Ganeev,et al."Effects of Laser Plasma Formation on Quasi-Phase Matching of High-Order Harmonics from Nanoparticles and Atoms".Nanomaterials 9.4(2019):12.

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