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Near-field behavior of zone-plate-like plasmonic nanostructures
Fu, Yongqi1; Zhou, Wei2; Lim, Lennie Enk Ng2
Source PublicationJOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
Volume25Issue:1Pages:238-249
2008
Language英语
Indexed BySCI
WOS IDWOS:000252853700028
SubtypeArticle
AbstractThe near-field behavior of a new plasmonic structure, the plasmonic micro-zone-plate (PMZP), is presented. The PMZP can realize superfocusing at a working distance on the micrometer scale and a resolving power beyond the diffraction limit. Compared with conventional Fresnel zone plates (CFZPs), its unique characteristics of a significantly elongated depth of focus (DOF) and focal length will make autofocusing easier for the relevant optical systems. These characteristics imply that it is possible to realize a free feedback control system for autofocusing systems in which probe scanning is performed with a constant working distance from the probe to the sample surface, provided that the flatness variation of the sample substrate is within the DOE Moreover, unlike the CFZPs, there is no series of focal points appearing for beam propagation in the near-field region with a propagation distance ranging from lambda to 8 lambda or even longer. In addition, transmission properties in the near-field region are investigated by means of a computational simulation based on a finite-difference time-domain numerical algorithm. Peak transmission wavelength shifts were observed while the metal film thickness was changed. Focusing characteristics were analyzed for different numerical apertures of the PMZPs. (C) 2007 Optical Society of America.
WOS KeywordTRANSMISSION ; DIFFRACTION ; POLARITONS ; APERTURE ; ARRAYS ; SLITS ; LIGHT
WOS Research AreaOptics
WOS SubjectOptics
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/3614
Collection光电技术研究所被WoS收录文章
Affiliation1.Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China
2.Nanyang Technol Univ, Precis Engn & Nanotechnol Ctr, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
Recommended Citation
GB/T 7714
Fu, Yongqi,Zhou, Wei,Lim, Lennie Enk Ng. Near-field behavior of zone-plate-like plasmonic nanostructures[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION,2008,25(1):238-249.
APA Fu, Yongqi,Zhou, Wei,&Lim, Lennie Enk Ng.(2008).Near-field behavior of zone-plate-like plasmonic nanostructures.JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION,25(1),238-249.
MLA Fu, Yongqi,et al."Near-field behavior of zone-plate-like plasmonic nanostructures".JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION 25.1(2008):238-249.
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