Far-field optical imaging of surface plasmons with a subdiffraction limited separation-Reference-Cited by-同舟云学术

Far-field optical imaging of surface plasmons with a subdiffraction limited separation

Published:2020-12-18 Issue:3 Volume:10 Page:1099-1106
ISSN:2192-8614
Container-title:Nanophotonics
language:en
Short-container-title:

Author:

Xiang Yifeng¹^ORCID,Chen Junxue²,Tang Xi³,Wang Ruxue⁴,Zhan Qiwen⁵⁶^ORCID,Lakowicz Joseph R.⁷,Zhang Douguo³

Affiliation:

1. Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education , Fujian Provincial Key Laboratory of Photonics Technology, College of Photonic and Electronic Engineering, Fujian Normal University , Fuzhou 350117 , China

2. College of Science , Guilin University of Technology , Guilin , 541004 , China

3. Department of Optics and Optical Engineering, Institute of Photonics , University of Science and Technology of China , Hefei , Anhui , 230026 , China

4. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences , Shanghai , 200050 , China

5. Department of Electro-Optics and Photonics , University of Dayton , 300 College Park , Dayton , OH , 45469-2951 , USA

6. School of Optical-Electrical and Computer Engineering , University of Shanghai for Science and Technology , Shanghai , 200093 , China

7. Department of Biochemistry and Molecular Biology, Center for Fluorescence Spectroscopy , University of Maryland School of Medicine , 725 West Lombard St. , Baltimore , MD , 21201 , USA

Abstract

Abstract When an ultrathin silver nanowire with a diameter less than 100 nm is placed on a photonic band gap structure, surface plasmons can be excited and propagate along two side-walls of the silver nanowire. Although the diameter of the silver nanowire is far below the diffraction limit, two bright lines can be clearly observed at the image plane by a standard wide-field optical microscope. Simulations suggest that the two bright lines in the far-field are caused by the unique phase distribution of plasmons on the two side-walls of the silver nanowire. Combining with the sensing ability of surface plasmons to its environment, the configuration reported in this work is capable of functioning as a sensing platform to monitor environmental changes in the near-field region of this ultrathin nanowire.

Funder

National Institute of Health

National Institute of General Medical Sciences

National Nature Science Foundation of China

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology

Link

https://www.degruyter.com/document/doi/10.1515/nanoph-2020-0500/pdf

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