Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation
Nanoantennas enable the concentration and manipulation of light at the (sub‐)nanoscale. This ability offers novel strategies to strengthen light‐matter interactions in a controlled fashion. However, most nanoantennas are highly sensitive to light polarization and emitter orientation, which is disadv...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/86621 http://hdl.handle.net/10220/45174 |
| _version_ | 1811692914126880768 |
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| author | Pacheco-Peña, Víctor Fernández-Domínguez, Antonio I. Luo, Yu Beruete, Miguel Navarro-Cía, Miguel |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Pacheco-Peña, Víctor Fernández-Domínguez, Antonio I. Luo, Yu Beruete, Miguel Navarro-Cía, Miguel |
| author_sort | Pacheco-Peña, Víctor |
| collection | NTU |
| description | Nanoantennas enable the concentration and manipulation of light at the (sub‐)nanoscale. This ability offers novel strategies to strengthen light‐matter interactions in a controlled fashion. However, most nanoantennas are highly sensitive to light polarization and emitter orientation, which is disadvantageous for many applications (e.g., Raman and fluorescence spectroscopy depend strongly on molecular symmetry and orientation, as well as on the local optical field gradient). It is also unfortunate that analytical descriptions, essential to bridge experimental observations to knowledge and future design guidelines, have lagged behind. Here, resorting to conformal transformation, aluminum nanotripods excited by a nanoemitter of arbitrary orientation are studied analytically. Our results, corroborated with full‐wave simulations, show that aluminum nanotripods are robust not only to emitter orientation, but also to its position. Hence, this work exemplifies the effectiveness and efficiency of transformation optics to analytically describe and optimize light‐matter interaction in complex plasmonic nanoantennas. |
| first_indexed | 2024-10-01T06:43:21Z |
| format | Journal Article |
| id | ntu-10356/86621 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:43:21Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/866212020-03-07T13:57:29Z Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation Pacheco-Peña, Víctor Fernández-Domínguez, Antonio I. Luo, Yu Beruete, Miguel Navarro-Cía, Miguel School of Electrical and Electronic Engineering Conformal Transformation Nanoantenna Nanoantennas enable the concentration and manipulation of light at the (sub‐)nanoscale. This ability offers novel strategies to strengthen light‐matter interactions in a controlled fashion. However, most nanoantennas are highly sensitive to light polarization and emitter orientation, which is disadvantageous for many applications (e.g., Raman and fluorescence spectroscopy depend strongly on molecular symmetry and orientation, as well as on the local optical field gradient). It is also unfortunate that analytical descriptions, essential to bridge experimental observations to knowledge and future design guidelines, have lagged behind. Here, resorting to conformal transformation, aluminum nanotripods excited by a nanoemitter of arbitrary orientation are studied analytically. Our results, corroborated with full‐wave simulations, show that aluminum nanotripods are robust not only to emitter orientation, but also to its position. Hence, this work exemplifies the effectiveness and efficiency of transformation optics to analytically describe and optimize light‐matter interaction in complex plasmonic nanoantennas. MOE (Min. of Education, S’pore) 2018-07-23T06:30:44Z 2019-12-06T16:25:56Z 2018-07-23T06:30:44Z 2019-12-06T16:25:56Z 2017 Journal Article Pacheco-Peña, V., Fernández-Domínguez, A. I., Luo, Y., Beruete, M., & Navarro-Cía, M. (2017). Aluminum Nanotripods for Light-Matter Coupling Robust to Nanoemitter Orientation. Laser & Photonics Reviews, 11(5), 1700051-. 1863-8880 https://hdl.handle.net/10356/86621 http://hdl.handle.net/10220/45174 10.1002/lpor.201700051 en Laser & Photonics Reviews © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | Conformal Transformation Nanoantenna Pacheco-Peña, Víctor Fernández-Domínguez, Antonio I. Luo, Yu Beruete, Miguel Navarro-Cía, Miguel Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation |
| title | Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation |
| title_full | Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation |
| title_fullStr | Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation |
| title_full_unstemmed | Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation |
| title_short | Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation |
| title_sort | aluminum nanotripods for light matter coupling robust to nanoemitter orientation |
| topic | Conformal Transformation Nanoantenna |
| url | https://hdl.handle.net/10356/86621 http://hdl.handle.net/10220/45174 |
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