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Not-so-extraordinary transmission through an array of nano-holes in a metal film

Not-so-extraordinary transmission through an array of nano-holes in a metal film
Not-so-extraordinary transmission through an array of nano-holes in a metal film
Extraordinary strong transmission of light through a metal films perforated with sub-wavelength channels, such as an array of nanoscale holes, is a classical cornerstone phenomenon of nanophotonics that has yielded numerous applications. However, at extremely small thicknesses the perforation of semi-transparent metal films with arrays of nanoscale holes has, conversely, been shown to suppress transmission. On the other hand, it has been suggested recently that the transmission of sub-wavelength channels may be enhanced by filling them with a low-loss ‘epsilon-near-zero’ (ENZ) medium. Here we show that filling nanoscale holes in semi-transparent metal films with an epsilon-near-zero plasmonic material increases the overall transmission of the film. Moreover, using a generic oscillator model for ENZ media, describing a dielectric response compliant with Kramers-Kronig relations, we demonstrate that filling nano-holes with such material actually reduces transmission at the zero-epsilon frequency.
Piccinotti, Davide
15c6d296-3464-43ec-943a-8155e66d2a51
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Yao, Jin
83dff1cd-6f7c-4b47-968e-18c64ffcb24b
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Hayden, Brian
aea74f68-2264-4487-9d84-5b12ddbbb331
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Piccinotti, Davide
15c6d296-3464-43ec-943a-8155e66d2a51
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Yao, Jin
83dff1cd-6f7c-4b47-968e-18c64ffcb24b
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Hayden, Brian
aea74f68-2264-4487-9d84-5b12ddbbb331
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Piccinotti, Davide, Gholipour, Behrad, Yao, Jin, MacDonald, Kevin F., Hayden, Brian and Zheludev, Nikolai (2017) Not-so-extraordinary transmission through an array of nano-holes in a metal film. Progress in Electromagnetics Research Symposium 2017, Singapore. 19 - 22 Nov 2017.

Record type: Conference or Workshop Item (Other)

Abstract

Extraordinary strong transmission of light through a metal films perforated with sub-wavelength channels, such as an array of nanoscale holes, is a classical cornerstone phenomenon of nanophotonics that has yielded numerous applications. However, at extremely small thicknesses the perforation of semi-transparent metal films with arrays of nanoscale holes has, conversely, been shown to suppress transmission. On the other hand, it has been suggested recently that the transmission of sub-wavelength channels may be enhanced by filling them with a low-loss ‘epsilon-near-zero’ (ENZ) medium. Here we show that filling nanoscale holes in semi-transparent metal films with an epsilon-near-zero plasmonic material increases the overall transmission of the film. Moreover, using a generic oscillator model for ENZ media, describing a dielectric response compliant with Kramers-Kronig relations, we demonstrate that filling nano-holes with such material actually reduces transmission at the zero-epsilon frequency.

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PIERS not-so-extraordinary transmission - Accepted Manuscript
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More information

Published date: 19 November 2017
Venue - Dates: Progress in Electromagnetics Research Symposium 2017, Singapore, 2017-11-19 - 2017-11-22

Identifiers

Local EPrints ID: 413755
URI: http://eprints.soton.ac.uk/id/eprint/413755
PURE UUID: 7b6e8975-8601-41e8-b453-bd15b9739d2c
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for Brian Hayden: ORCID iD orcid.org/0000-0002-7762-1812
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 05 Sep 2017 16:30
Last modified: 22 Nov 2021 05:43

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Contributors

Author: Davide Piccinotti
Author: Behrad Gholipour
Author: Jin Yao
Author: Brian Hayden ORCID iD

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