Coherent surface plasmon polariton amplification via free-electron pumping

doi:10.1038/s41586-022-05239-2

	Coherent surface plasmon polariton amplification via free-electron pumping
	Zhang, Dongdong 1,2; Zeng, Yushan 1; Bai, Yafeng 1; Li, Zhongpeng 1; Tian, Ye 1,2; Li, Ruxin1,2,3,4
	2022-11-03
发表期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
卷号	611 期号:7934
发表状态	已发表
DOI	10.1038/s41586-022-05239-2
摘要	["Surface plasmonics with its unique confinement of light(1,2) is expected to be a cornerstone for future compact radiation sources and integrated photonics devices. The energy transfer between light and matter is a defining aspect that underlies recent studies on optical surface-wave-mediated spontaneous emissions(3-5). However, coherent stimulated emission of free electrons, which is essential for free-electron light sources, and its dynamical amplification process remain to be disclosed in a clear, unambiguous and calibrated manner. Here we present the coherent amplification of terahertz surface plasmon polaritons via free-electron-stimulated emission: a femtosecond optical pulse creates an in-phase free-electron pulse with an initial terahertz surface wave, and their ensuing interactions intensify the terahertz surface wave coherently. The underlying dynamics of the amplification, including a twofold redshift in the radiation frequency over a one-millimetre interaction length, are resolved as electromagnetic-field-profile evolutions using an optical pump-probe method. By extending the approach to a properly phase-matched electron bunch, our theoretical analysis predicts a super-radiant surface-wave growth, which lays the ground for a stimulated surface-wave light source and may facilitate capable means for matter manipulation, especially in the terahertz band.","Stimulated emission by free electrons is used to amplify terahertz surface plasmon polaritons in a manner resembles that of light amplification in a high-gain free-electron laser."]
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收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China["11922412","11874372","12104473","12104471"] ; Shanghai Sailing Program["20YF1454900","21YF1453900"] ; [XDB16]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000878271000015
出版者	NATURE PORTFOLIO
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/248886
专题	物质科学与技术学院_特聘教授组_李儒新组
通讯作者	Bai, Yafeng; Tian, Ye; Li, Ruxin
作者单位	1.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China 4.Zhangjiang Lab, Shanghai, Peoples R China
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Zhang, Dongdong,Zeng, Yushan,Bai, Yafeng,et al. Coherent surface plasmon polariton amplification via free-electron pumping[J]. NATURE,2022,611(7934).
APA	Zhang, Dongdong,Zeng, Yushan,Bai, Yafeng,Li, Zhongpeng,Tian, Ye,&Li, Ruxin.(2022).Coherent surface plasmon polariton amplification via free-electron pumping.NATURE,611(7934).
MLA	Zhang, Dongdong,et al."Coherent surface plasmon polariton amplification via free-electron pumping".NATURE 611.7934(2022).