Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid Nanoantenna
An all-dielectric nanoantenna is expected to greatly boost the nonlinear performance owing to its large mode volume and low material loss. However, it still suffers from the relatively weak near-field enhancement and the inferior far-field directivity. In this work, by successively introducing an up...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9468335/ |
| _version_ | 1818248666601750528 |
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| author | Yan Yin Jin Yao Longfang Ye Guoxiong Cai Qing Huo Liu |
| author_facet | Yan Yin Jin Yao Longfang Ye Guoxiong Cai Qing Huo Liu |
| author_sort | Yan Yin |
| collection | DOAJ |
| description | An all-dielectric nanoantenna is expected to greatly boost the nonlinear performance owing to its large mode volume and low material loss. However, it still suffers from the relatively weak near-field enhancement and the inferior far-field directivity. In this work, by successively introducing an upper metal ring and a bottom metal film, the plasmonic resonance and the perfect electric conductor (PEC) mirror effect are employed to significantly enhance and tailor the third harmonic generation (THG) from the high-index silicon nanoantenna. Numerical results show that benefiting from both of these two metal components, not only the THG efficiency is increased by more than 1 and 3.5 orders of magnitude compared with those with only single metal component and without any metal component, respectively, but also an improved radiation directivity can be obtained. The dependences of geometric parameters are discussed as well. This work suggests a route to enhance and manipulate the nonlinear radiation by a hybrid nanoantenna and facilitates its practical applications such as biosensing and nonlinear light sources. |
| first_indexed | 2024-12-12T15:24:14Z |
| format | Article |
| id | doaj.art-5d20f817bbb4479c8d03211468152ad2 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-12T15:24:14Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-5d20f817bbb4479c8d03211468152ad22022-12-22T00:20:17ZengIEEEIEEE Photonics Journal1943-06552021-01-011341610.1109/JPHOT.2021.30933459468335Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid NanoantennaYan Yin0Jin Yao1https://orcid.org/0000-0002-5664-832XLongfang Ye2https://orcid.org/0000-0003-0867-6032Guoxiong Cai3https://orcid.org/0000-0002-3660-1559Qing Huo Liu4https://orcid.org/0000-0001-5286-4423Institute of Electromagnetics and Acoustics, Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology, Xiamen University, Xiamen, ChinaInstitute of Electromagnetics and Acoustics, Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology, Xiamen University, Xiamen, ChinaInstitute of Electromagnetics and Acoustics, Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology, Xiamen University, Xiamen, ChinaInstitute of Electromagnetics and Acoustics, Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology, Xiamen University, Xiamen, ChinaDepartment of Electrical and Computer Engineering, Duke University, Durham, NC, USAAn all-dielectric nanoantenna is expected to greatly boost the nonlinear performance owing to its large mode volume and low material loss. However, it still suffers from the relatively weak near-field enhancement and the inferior far-field directivity. In this work, by successively introducing an upper metal ring and a bottom metal film, the plasmonic resonance and the perfect electric conductor (PEC) mirror effect are employed to significantly enhance and tailor the third harmonic generation (THG) from the high-index silicon nanoantenna. Numerical results show that benefiting from both of these two metal components, not only the THG efficiency is increased by more than 1 and 3.5 orders of magnitude compared with those with only single metal component and without any metal component, respectively, but also an improved radiation directivity can be obtained. The dependences of geometric parameters are discussed as well. This work suggests a route to enhance and manipulate the nonlinear radiation by a hybrid nanoantenna and facilitates its practical applications such as biosensing and nonlinear light sources.https://ieeexplore.ieee.org/document/9468335/Optical nanoantennathird harmonic generationnonlinear far-field scattering |
| spellingShingle | Yan Yin Jin Yao Longfang Ye Guoxiong Cai Qing Huo Liu Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid Nanoantenna IEEE Photonics Journal Optical nanoantenna third harmonic generation nonlinear far-field scattering |
| title | Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid Nanoantenna |
| title_full | Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid Nanoantenna |
| title_fullStr | Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid Nanoantenna |
| title_full_unstemmed | Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid Nanoantenna |
| title_short | Tailoring Third Harmonic Generation From Anapole Mode in a Metal-Dielectric Hybrid Nanoantenna |
| title_sort | tailoring third harmonic generation from anapole mode in a metal dielectric hybrid nanoantenna |
| topic | Optical nanoantenna third harmonic generation nonlinear far-field scattering |
| url | https://ieeexplore.ieee.org/document/9468335/ |
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