Picosecond terahertz pump-probe realized from Chinese terahertz free-electron laser*

doi:10.1088/1674-1056/ab961b

	Picosecond terahertz pump-probe realized from Chinese terahertz free-electron laser*
	Wang, Chao 6,7; Xu, Wen 4,5,7; Mei, Hong-Ying 3,7; Qin, Hua 2; Zhao, Xin-Nian 6,7; Wen, Hua 6,7; Zhang, Chao 7; Ding, Lan 4,5; Xu, Yong 1; Li, Peng 1
刊名	CHINESE PHYSICS B
	2020-07-01
卷号	29
关键词	free-electron laser ultrafast measurements picosecond phenomena
ISSN号	1674-1056
DOI	10.1088/1674-1056/ab961b
通讯作者	Xu, Wen(wenxu_issp@aliyun.com)
英文摘要	Electron energy relaxation time tau is one of the key physical parameters for electronic materials. In this study, we develop a new technique to measure tau in a semiconductor via monochrome picosecond (ps) terahertz (THz) pump and probe experiment. The special THz pulse structure of Chinese THz free-electron laser (CTFEL) is utilized to realize such a technique, which can be applied to the investigation into THz dynamics of electronic and optoelectronic materials and devices. We measure the THz dynamical electronic properties of high-mobility n-GaSb wafer at 1.2 THz, 1.6 THz, and 2.4 THz at room temperature and in free space. The obtained electron energy relaxation time for n-GaSb is in line with that measured via,e.g., four-wave mixing techniques. The major advantages of monochrome ps THz pump-probe in the study of electronic and optoelectronic materials are discussed in comparison with other ultrafast optoelectronic techniques. This work is relevant to the application of pulsed THz free-electron lasers and also to the development of advanced ultrafast measurement technique for the investigation of dynamical properties of electronic and optoelectronic materials.
资助项目	National Natural Science Foundation of China[U1930116] ; National Natural Science Foundation of China[U1832153] ; National Natural Science Foundation of China[11574319] ; Center of Science and Technology of Hefei Academy of Sciences, China[2016FXZY002]
WOS关键词	SPECTROSCOPY
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000558519100001
资助机构	National Natural Science Foundation of China ; Center of Science and Technology of Hefei Academy of Sciences, China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/70843]
专题	中国科学院合肥物质科学研究院
通讯作者	Xu, Wen
作者单位	1.China Acad Engn Phys, Inst Appl Elect, Mianyang 621900, Sichuan, Peoples R China 2.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Key Lab Nanodevices & Applicat, Suzhou 215123, Peoples R China 3.Huanghuai Univ, Fac Informat Engn, Zhumadian 463000, Peoples R China 4.Yunnan Univ, Yunnan Key Lab Quantum Informat, Kunming 650091, Yunnan, Peoples R China 5.Yunnan Univ, Sch Phys & Astron, Kunming 650091, Yunnan, Peoples R China 6.Univ Sci & Technol China, Hefei 230026, Peoples R China 7.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chao,Xu, Wen,Mei, Hong-Ying,et al. Picosecond terahertz pump-probe realized from Chinese terahertz free-electron laser*[J]. CHINESE PHYSICS B,2020,29.
APA	Wang, Chao.,Xu, Wen.,Mei, Hong-Ying.,Qin, Hua.,Zhao, Xin-Nian.,...&Li, Ming.(2020).Picosecond terahertz pump-probe realized from Chinese terahertz free-electron laser*.CHINESE PHYSICS B,29.
MLA	Wang, Chao,et al."Picosecond terahertz pump-probe realized from Chinese terahertz free-electron laser*".CHINESE PHYSICS B 29(2020).