Publication detail

Surface Plasmon Interference Device as a Source of Near-Field Power for Photoluminescence

KVAPIL, M. ŠIKOLA, T. KŘÁPEK, V.

Original Title

Surface Plasmon Interference Device as a Source of Near-Field Power for Photoluminescence

Type

journal article in Web of Science

Language

English

Original Abstract

We theoretically demonstrate that a simple device consisting of an opaque gold layer with subwavelength slits - the so-called surface plasmon interference device - is capable of transforming the far-field optical power to the near-field one. Optimized slits yield a high conversion efficiency amounting to 45% in terms of the near-field to far-field electric intensity ratio. With a single linear slit arrangement, a propagating wave with a homogeneous field distribution is formed, attributed to surface plasmon polaritons based on its polarization properties. On the other hand, with the slit arrangement supporting interference, it is possible to obtain a standing wave with characteristic spatially modulated interference fringes and spatially separate polarization components. A circular slit can be used for focusing the near-field, with the possibility of obtaining a considerably enhanced field with respect to the excitation. We discuss the implication of the enhanced near-field for the near-field excitation of photoluminescence with the capability to bring a spatial resolution of the photoluminescence spectroscopy beyond the diffraction limit. © 2022 Polish Academy of Sciences. All rights reserved.

Keywords

near field; photoluminescence; surface plasmon polariton

Authors

KVAPIL, M.; ŠIKOLA, T.; KŘÁPEK, V.

Released

1. 11. 2022

ISBN

0587-4246

Periodical

ACTA PHYSICA POLONICA A

Year of study

142

Number

5

State

Republic of Poland

Pages from

668

Pages to

672

Pages count

5

URL

http://przyrbwn.icm.edu.pl/APP/PDF/142/app142z5p17.pdf

BibTex

@article{BUT182406,
  author="Michal {Kvapil} and Tomáš {Šikola} and Vlastimil {Křápek}",
  title="Surface Plasmon Interference Device as a Source of Near-Field Power for Photoluminescence",
  journal="ACTA PHYSICA POLONICA A",
  year="2022",
  volume="142",
  number="5",
  pages="668--672",
  doi="10.12693/APhysPolA.142.668",
  issn="0587-4246",
  url="http://przyrbwn.icm.edu.pl/APP/PDF/142/app142z5p17.pdf"
}