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题名:
Enhanced Far-Field Focusing by Plasmonic Lens Under Radially Polarized Beam Illumination
作者: Zhang, Xiantao1; Yan, Lianshan1; Guo, Yinghui1; Pan, Wei1; Luo, Bin1; Luo, Xiangang2
刊名: PLASMONICS
出版日期: 2016-02-01
卷号: 11, 期号:1, 页码:109-115
关键词: Diffraction and gratings ; Subwavelength structures ; Multilayers ; Surface plasmons
DOI: 10.1007/s11468-015-0029-9
文章类型: Article
英文摘要: A plasmonic lens with coupling annular grooves is proposed to achieve enhanced far-field focusing performance. Based on the finite difference time domain (FDTD) method, we demonstrate that a focal beam could be obtained under a radially polarized light illumination. The obtained focal length and working distance range from 3.1 to 3.6 mu m and 1.7 to 2.1 mu m, respectively. The full-width at half-maximum (FWHM) of the focal spot is about 0.8 lambda (i) and the overall field enhancement factor is improved to be similar to 3.9.
WOS标题词: Science & Technology ; Physical Sciences ; Technology
类目[WOS]: Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]: SURFACE-PLASMONS ; OPTICS
收录类别: SCI
项目资助者: National Basic Research Program of China(2013CBA01704) ; Natural Science Foundation of China(61325023) ; Doctoral Fund of Ministry of Education of China(20130184110015)
语种: 英语
WOS记录号: WOS:000368731200016
ISSN号: 1557-1955
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3837
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Southwest Jiaotong Univ, Sch Informat Sci & Technol, Ctr Informat Photon & Commun, Chengdu 610031, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610029, Peoples R China

Recommended Citation:
Zhang, Xiantao,Yan, Lianshan,Guo, Yinghui,et al. Enhanced Far-Field Focusing by Plasmonic Lens Under Radially Polarized Beam Illumination[J]. PLASMONICS,2016,11(1):109-115.
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