Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions
We report on an experimental and computational (multipole decomposition) study of Fano resonance modes in complementary near-IR plasmonic metamaterials. Resonance wavelengths and linewidths can be controlled by changing the symmetry of the unit cell so as to manipulate the balance among multipole co...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/85454 http://hdl.handle.net/10220/43713 |
| _version_ | 1811687904052772864 |
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| author | Lim, Wen Xiang Han, Song Gupta, Manoj MacDonald, Kevin F. Singh, Ranjan |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Lim, Wen Xiang Han, Song Gupta, Manoj MacDonald, Kevin F. Singh, Ranjan |
| author_sort | Lim, Wen Xiang |
| collection | NTU |
| description | We report on an experimental and computational (multipole decomposition) study of Fano resonance modes in complementary near-IR plasmonic metamaterials. Resonance wavelengths and linewidths can be controlled by changing the symmetry of the unit cell so as to manipulate the balance among multipole contributions. In the present case, geometrically inverting one half of a four-slot (paired asymmetric double bar) unit cell design changes the relative magnitude of magnetic quadrupole and toroidal dipole contributions leading to the enhanced quality factor, figure of merit, and spectral tuning of the plasmonic Fano resonance. |
| first_indexed | 2024-10-01T05:23:43Z |
| format | Journal Article |
| id | ntu-10356/85454 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:23:43Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/854542023-02-28T19:42:04Z Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions Lim, Wen Xiang Han, Song Gupta, Manoj MacDonald, Kevin F. Singh, Ranjan School of Physical and Mathematical Sciences Center for Disruptive Photonic Technologies Linewidths Plasmons We report on an experimental and computational (multipole decomposition) study of Fano resonance modes in complementary near-IR plasmonic metamaterials. Resonance wavelengths and linewidths can be controlled by changing the symmetry of the unit cell so as to manipulate the balance among multipole contributions. In the present case, geometrically inverting one half of a four-slot (paired asymmetric double bar) unit cell design changes the relative magnitude of magnetic quadrupole and toroidal dipole contributions leading to the enhanced quality factor, figure of merit, and spectral tuning of the plasmonic Fano resonance. MOE (Min. of Education, S’pore) Published version 2017-09-11T06:39:34Z 2019-12-06T16:04:00Z 2017-09-11T06:39:34Z 2019-12-06T16:04:00Z 2017 Journal Article Lim, W. X., Han, S., Gupta, M., MacDonald, K. F., & Singh, R. (2017). Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions. Applied Physics Letters, 111(6), 061104-. 0003-6951 https://hdl.handle.net/10356/85454 http://hdl.handle.net/10220/43713 10.1063/1.4997423 en Applied Physics Letters © 2017 American Institute of Physics (AIP). This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: [http://dx.doi.org/10.1063/1.4997423]. 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. 5 p. application/pdf |
| spellingShingle | Linewidths Plasmons Lim, Wen Xiang Han, Song Gupta, Manoj MacDonald, Kevin F. Singh, Ranjan Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions |
| title | Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions |
| title_full | Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions |
| title_fullStr | Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions |
| title_full_unstemmed | Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions |
| title_short | Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions |
| title_sort | near infrared linewidth narrowing in plasmonic fano resonant metamaterials via tuning of multipole contributions |
| topic | Linewidths Plasmons |
| url | https://hdl.handle.net/10356/85454 http://hdl.handle.net/10220/43713 |
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