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	Harmonic generation at air-soil interface by femtosecond laser filament
	Xia, Jinhua; Chen, Na; Liu, Yaoxiang; Wang, Tiejun; Zhu, Zhongbin; Sun, Haiyi; Yan, Xiaona; Liu, Jiansheng; Du, Juan; Xia, Yunhua
刊名	Chin. Opt. Lett.
	2017
卷号	15期号:6
通讯作者	tiejunwang@siom.ac.cn
英文摘要	We observe the third-harmonic generation and second-harmonic generation together with element fluorescence from the interaction of a femtosecond laser filament with a rough surface sample (sandy soil) in non-phase-matched directions. The harmonics prove to originate from the phase-matched surface harmonics and air filament, then scatter in non-phase-matched directions due to the rough surface. These harmonics occurr when the sample is in the region before and after the laser filament, where the laser intensity is not high enough to excite the element fluorescence. The observed harmonics are related to the element spectroscopy, which will benefit the understanding of the interaction of the laser filament with a solid and be helpful for the application on filament induced breakdown spectroscopy.
收录类别	SCI
资助信息	Key Project from the Bureau of International Cooperation Chinese Academy of Sciences [181231KYSB20160045]; 100 Talents Program of the Chinese Academy of Sciences; State Key Laboratory of High Field Laser Physics; [XDB16]
WOS记录号	WOS:000403184400015
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/27640]
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	Xia, Jinhua,Chen, Na,Liu, Yaoxiang,et al. Harmonic generation at air-soil interface by femtosecond laser filament[J]. Chin. Opt. Lett.,2017,15(6).
APA	Xia, Jinhua.,Chen, Na.,Liu, Yaoxiang.,Wang, Tiejun.,Zhu, Zhongbin.,...&Leng, Yuxin.(2017).Harmonic generation at air-soil interface by femtosecond laser filament.Chin. Opt. Lett.,15(6).
MLA	Xia, Jinhua,et al."Harmonic generation at air-soil interface by femtosecond laser filament".Chin. Opt. Lett. 15.6(2017).

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