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A terahertz near-field nanoscopy revealing edge fringes with a fast and highly sensitive quantum-well photodetector

文献类型：期刊论文

作者Qiu, Fucheng6,7,8,9; You, Guanjun4,5; Tan, Zhiyong8,9; Wan, Wenjian8,9; Wang, Chang8,9; Liu, Xiao4,5; Chen, Xinzhong3; Liu, Rui2; Tao, Hu1; Fu, Zhanglong8,9
刊名ISCIENCE
出版日期2022-07-15
卷号25期号:7页码:14
DOI10.1016/j.isci.2022.104637
通讯作者Tan, Zhiyong(zytan@mail.sim.ac.cn) ; Wang, Chang(cwang@mail.sim.ac.cn) ; Cao, Juncheng(jccao@mail.sim.ac.cn)
英文摘要We demonstrate the successful implementation of a terahertz (THz) quantum-well photodetector (QWP) for effective signal collection in a scattering-type scanning near-field optical microscope (s-SNOM) system. The light source is an electrically pumped THz quantum cascade laser (QCL) at 4.2 THz, which spectrally matches with the peak photoresponse of THz QWP. The sensitive THz QWP has a low noise equivalent power (NEP) of about 1.1 pW/Hz0.5 and a spectral response range from 2 to 7 THz. The fast-responding capability of the THz QWP is vital for detecting the rapidly tip-modulated THz light which can effectively suppress the background noise. The THz images of the nanostructure demonstrate a spatial resolution of about 95 nm, corresponding to ,-,l/752 at 4.2 THz. We experimentally investigate and theoretically interpret the formation of the fringes which appear at the edge position of a gold stripe in the THz near-field image.
资助项目National Natural Science Foundation of China[61927813] ; National Natural Science Foundation of China[61975225] ; National Natural Science Foundation of China[62035014] ; National Natural Science Foundation of China[62004209] ; National Key R&D Program of China[2017YFF0106302] ; National Science Fund for Excellent Young Scholars[62022084] ; From 0 to 1 Innovation Program of Chinese Academy of Sciences[ZDBS-LY-JSC009] ; Chongqing Science and Technology Commission[E1396103] ; Chongqing Science and Technology Commission[E2316104] ; Science and Technology Commission of Shanghai Municipality[21DZ1101102]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000834840400003
出版者CELL PRESS
源URL[http://119.78.100.138/handle/2HOD01W0/16432]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Tan, Zhiyong; Wang, Chang; Cao, Juncheng
作者单位1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China
2.Ithatron Instruments, Jiaxing 314006, Peoples R China
3.SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
4.Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, Shanghai 200093, Peoples R China
5.Univ Shanghai Sci & Technol, Terahertz Technol Innovat Res Inst, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China
6.Univ Chinese Acad Sci, Chongqing Sch, Chongqing 400714, Peoples R China
7.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
8.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
9.Chinese Acad Sci, Lab Terahertz Solid State Technol, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China
推荐引用方式
GB/T 7714		 Qiu, Fucheng,You, Guanjun,Tan, Zhiyong,et al. A terahertz near-field nanoscopy revealing edge fringes with a fast and highly sensitive quantum-well photodetector[J]. ISCIENCE,2022,25(7):14.
APA Qiu, Fucheng.,You, Guanjun.,Tan, Zhiyong.,Wan, Wenjian.,Wang, Chang.,...&Cao, Juncheng.(2022).A terahertz near-field nanoscopy revealing edge fringes with a fast and highly sensitive quantum-well photodetector.ISCIENCE,25(7),14.
MLA Qiu, Fucheng,et al."A terahertz near-field nanoscopy revealing edge fringes with a fast and highly sensitive quantum-well photodetector".ISCIENCE 25.7(2022):14.

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来源：重庆绿色智能技术研究院

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