Novel configuration of aperture-type terahertz near-field imaging probe

doi:10.1088/1361-6463/ab866d

	Novel configuration of aperture-type terahertz near-field imaging probe
	Wang, Nan 1; Zhang, Xiaoxuan 1; Liang, Jie 1; Chang, Tianying 1,2; Cui, Hong-Liang 1,3
刊名	JOURNAL OF PHYSICS D-APPLIED PHYSICS
	2020-07-15
卷号	53 期号:29 页码:7
关键词	high-resolution imaging terahertz aperture antenna near-field imaging scanning probe microscopy curved aperture
ISSN号	0022-3727
DOI	10.1088/1361-6463/ab866d
通讯作者	Chang, Tianying(tchang@jlu.edu.cn)
英文摘要	A near-field imaging probe based on a size-optimized tapered frustum with concave aperture is designed and demonstrated. The performance of the new probe is evaluated by finite difference time-domain electromagnetic simulation and near-field imaging experiments. The new probe structure eliminates the large amount of reflection of the terahertz (THz) wave at the probe aperture due to impedance mismatch, and increases the electric field intensity that can be transmitted through the aperture by a factor of three within the near-field domain outside the aperture. These beneficial changes lead to an increase in the spatial resolution of the new probe, while concurrently prolonging the decay length of the electric field intensity transmitted from the apex, so that the THz imaging beam can transmit a longer distance and the stringent near-field conditions are moderated. An imaging resolution of at least 10 mu m (lambda/270) at 0.11 THz is obtained experimentally, with excellent repeatability, while the workable near-field distance is also increased substantially, making the new probe feasible for imaging subsurface microstructures.
资助项目	National Natural Science Foundation of China[61875196] ; National Natural Science Foundation of China[61705120]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000536815600001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11043]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Chang, Tianying
作者单位	1.Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130012, Jilin, Peoples R China 2.Qilu Univ Technol, Shandong Acad Sci, Inst Automat, Jinan 250014, Shandong, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Wang, Nan,Zhang, Xiaoxuan,Liang, Jie,et al. Novel configuration of aperture-type terahertz near-field imaging probe[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2020,53(29):7.
APA	Wang, Nan,Zhang, Xiaoxuan,Liang, Jie,Chang, Tianying,&Cui, Hong-Liang.(2020).Novel configuration of aperture-type terahertz near-field imaging probe.JOURNAL OF PHYSICS D-APPLIED PHYSICS,53(29),7.
MLA	Wang, Nan,et al."Novel configuration of aperture-type terahertz near-field imaging probe".JOURNAL OF PHYSICS D-APPLIED PHYSICS 53.29(2020):7.