Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials
Engaging strongly resonant interactions allows dramatic enhancement of functionalities of many electromagnetic devices. However, resonances can be dampened by Joule and radiation losses. While in many cases Joule losses may be minimized by the choice of constituting materials, controlling radiation...
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sg-ntu-dr.10356-983872023-02-28T19:21:50Z Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials Fedotov, Vassili A. Rogacheva, A. V. Savinov, V. Tsai, D. P. Zheludev, Nikolay I. School of Physical and Mathematical Sciences DRNTU::Science::Physics::Radiation physics Engaging strongly resonant interactions allows dramatic enhancement of functionalities of many electromagnetic devices. However, resonances can be dampened by Joule and radiation losses. While in many cases Joule losses may be minimized by the choice of constituting materials, controlling radiation losses is often a bigger problem. Recent solutions include the use of coupled radiant and sub-radiant modes yielding narrow asymmetric Fano resonances in a wide range of systems, from defect states in photonic crystals and optical waveguides with mesoscopic ring resonators to nanoscale plasmonic and metamaterial systems exhibiting interference effects akin to electromagnetically-induced transparency. Here we demonstrate theoretically and confirm experimentally a new mechanism of resonant electromagnetic transparency, which yields very narrow isolated symmetric Lorentzian transmission lines in toroidal metamaterials. It exploits the long sought non-trivial non-radiating charge-current excitation based on interfering electric and toroidal dipoles that was first proposed by Afanasiev and Stepanovsky in [J. Phys. A Math. Gen. 28, 4565 (1995)]. Published version 2014-01-07T01:34:41Z 2019-12-06T19:54:41Z 2014-01-07T01:34:41Z 2019-12-06T19:54:41Z 2013 2013 Journal Article Fedotov, V. A., Rogacheva, A. V., Savinov, V., Tsai, D. P., & Zheludev, N. I. (2013). Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials. Scientific reports, 3, 1-5. 2045-2322 https://hdl.handle.net/10356/98387 http://hdl.handle.net/10220/18402 10.1038/srep02967 24132231 en Scientific reports © 2013 The Authors. This paper was published in Scientific Reports and is made available as an electronic reprint (preprint) with permission of the authors. The paper can be found at the following official DOI: [http://dx.doi.org/10.1038/srep02967]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
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DRNTU::Science::Physics::Radiation physics Fedotov, Vassili A. Rogacheva, A. V. Savinov, V. Tsai, D. P. Zheludev, Nikolay I. Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials |
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Engaging strongly resonant interactions allows dramatic enhancement of functionalities of many electromagnetic devices. However, resonances can be dampened by Joule and radiation losses. While in many cases Joule losses may be minimized by the choice of constituting materials, controlling radiation losses is often a bigger problem. Recent solutions include the use of coupled radiant and sub-radiant modes yielding narrow asymmetric Fano resonances in a wide range of systems, from defect states in photonic crystals and optical waveguides with mesoscopic ring resonators to nanoscale plasmonic and metamaterial systems exhibiting interference effects akin to electromagnetically-induced transparency. Here we demonstrate theoretically and confirm experimentally a new mechanism of resonant electromagnetic transparency, which yields very narrow isolated symmetric Lorentzian transmission lines in toroidal metamaterials. It exploits the long sought non-trivial non-radiating charge-current excitation based on interfering electric and toroidal dipoles that was first proposed by Afanasiev and Stepanovsky in [J. Phys. A Math. Gen. 28, 4565 (1995)]. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Fedotov, Vassili A. Rogacheva, A. V. Savinov, V. Tsai, D. P. Zheludev, Nikolay I. |
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Article |
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Fedotov, Vassili A. Rogacheva, A. V. Savinov, V. Tsai, D. P. Zheludev, Nikolay I. |
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Fedotov, Vassili A. |
title |
Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials |
title_short |
Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials |
title_full |
Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials |
title_fullStr |
Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials |
title_full_unstemmed |
Resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials |
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resonant transparency and non-trivial non-radiating excitations in toroidal metamaterials |
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2014 |
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https://hdl.handle.net/10356/98387 http://hdl.handle.net/10220/18402 |
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1759853027950329856 |