Optical response of nanohole arrays filled with chalcogenide low-epsilon media
Optical response of nanohole arrays filled with chalcogenide low-epsilon media
When an array of subwavelength apertures in a metal film is filled with a chalcogenide semiconductor acting as a low‐epsilon medium at optical frequencies, an increase in transmission is observed over a broad range of plasmonic frequencies, and found to be enabled by “laminar” flow of energy through the chalcogenide inclusions. As losses decrease in such a low‐epsilon medium, with causality‐bound dispersion of complex relative permittivity, a peak in transmission emerges at a wavelength tending toward that of unitary refractive index, while counterintuitively the absorption of the composite structure increases.
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
19 November 2018
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
(2018)
Optical response of nanohole arrays filled with chalcogenide low-epsilon media.
Advanced Optical Materials, 6 (22), [1800395].
(doi:10.1002/adom.201800395).
Abstract
When an array of subwavelength apertures in a metal film is filled with a chalcogenide semiconductor acting as a low‐epsilon medium at optical frequencies, an increase in transmission is observed over a broad range of plasmonic frequencies, and found to be enabled by “laminar” flow of energy through the chalcogenide inclusions. As losses decrease in such a low‐epsilon medium, with causality‐bound dispersion of complex relative permittivity, a peak in transmission emerges at a wavelength tending toward that of unitary refractive index, while counterintuitively the absorption of the composite structure increases.
Text
adom.201800395 revised
- Accepted Manuscript
More information
Accepted/In Press date: 15 September 2018
e-pub ahead of print date: 8 October 2018
Published date: 19 November 2018
Identifiers
Local EPrints ID: 424180
URI: http://eprints.soton.ac.uk/id/eprint/424180
ISSN: 2195-1071
PURE UUID: c34be266-0f19-47bb-bfdf-35b857f53709
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Date deposited: 05 Oct 2018 11:33
Last modified: 16 Mar 2024 07:05
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Author:
Davide Piccinotti
Author:
Behrad Gholipour
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