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Observation of a high-energy Tamm plasmon state in the near-IR region

Observation of a high-energy Tamm plasmon state in the near-IR region
Observation of a high-energy Tamm plasmon state in the near-IR region

We report on the experimental observation of a Tamm plasmon state in the near-IR region characterized by an anomalously high energy level located in the upper half of the photonic band gap. Such a "blue"Tamm plasmon was demonstrated at the interface between a conventional, completely periodic Bragg reflector and a nanostructured nonresonant thin gold grating. We study the effect of the grating period on the characteristics of the anomalous state and show that the anomaly results from a nontrivial topology of the nanograting's optical near field, which cannot be captured by the effective medium approach and transfer matrix method commonly employed in the analysis of Tamm plasmons.

Tamm plasmon, distributed Bragg reflector, effective medium approach, hybrid optical cavity, nanograting
1944-8244
13638-13644
Buchnev, Oleksandr
60cdb0d2-3388-47be-a066-61b3b396f69d
Belosludtsev, Alexandr
a7b083b1-d041-4d8c-9b1a-7d8de17bc316
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Buchnev, Oleksandr
60cdb0d2-3388-47be-a066-61b3b396f69d
Belosludtsev, Alexandr
a7b083b1-d041-4d8c-9b1a-7d8de17bc316
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25

Buchnev, Oleksandr, Belosludtsev, Alexandr and Fedotov, Vassili (2022) Observation of a high-energy Tamm plasmon state in the near-IR region. ACS Applied Materials & Interfaces, 14 (11), 13638-13644. (doi:10.1021/acsami.2c00486).

Record type: Article

Abstract

We report on the experimental observation of a Tamm plasmon state in the near-IR region characterized by an anomalously high energy level located in the upper half of the photonic band gap. Such a "blue"Tamm plasmon was demonstrated at the interface between a conventional, completely periodic Bragg reflector and a nanostructured nonresonant thin gold grating. We study the effect of the grating period on the characteristics of the anomalous state and show that the anomaly results from a nontrivial topology of the nanograting's optical near field, which cannot be captured by the effective medium approach and transfer matrix method commonly employed in the analysis of Tamm plasmons.

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Submitted date: 26 October 2021
Accepted/In Press date: 28 February 2022
e-pub ahead of print date: 9 March 2022
Published date: 23 March 2022
Additional Information: Funding Information: The authors thank V. Yu. Reshetnyak and D. Evans for stimulating discussions and helpful comments. They also acknowledge the financial support of the UK Engineering and Physical Sciences Research Council (EP/R024421/1) and European Social Fund (Project No. 09.3.3-LMT-K-712-19-0203) under grant agreement with the Research Council of Lithuania (LMTLT). Following a period of embargo, the data from this paper can be obtained from the University of Southampton repository at https://doi.org/10.5258/SOTON/D2127 . Publisher Copyright: © 2022 American Chemical Society. Copyright: Copyright 2022 Elsevier B.V., All rights reserved.
Keywords: Tamm plasmon, distributed Bragg reflector, effective medium approach, hybrid optical cavity, nanograting

Identifiers

Local EPrints ID: 456911
URI: http://eprints.soton.ac.uk/id/eprint/456911
ISSN: 1944-8244
PURE UUID: 0f7ac5c1-ef07-43f3-b9a2-b50d865fcf3c

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Date deposited: 17 May 2022 16:35
Last modified: 17 May 2022 16:36

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Contributors

Author: Oleksandr Buchnev
Author: Alexandr Belosludtsev
Author: Vassili Fedotov

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