Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfaces
Active control of electromagnetically induced transparency (EIT) using metasurfaces has attracted growing interests in recent years, especially the ones that have multiple EIT windows. Here, we give out a metallic metasurface design that can achieve dual EIT (D-EIT) in the terahertz (THz) regime, an...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Materials |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2022.966535/full |
| _version_ | 1828351756534284288 |
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| author | Quan Li Hao Su Jun Zhu Shuang Wang |
| author_facet | Quan Li Hao Su Jun Zhu Shuang Wang |
| author_sort | Quan Li |
| collection | DOAJ |
| description | Active control of electromagnetically induced transparency (EIT) using metasurfaces has attracted growing interests in recent years, especially the ones that have multiple EIT windows. Here, we give out a metallic metasurface design that can achieve dual EIT (D-EIT) in the terahertz (THz) regime, and propose a strategy to individually and simultaneously control the two windows by integrating graphene structures into the design. The near-field simulations indicate that the physical mechanism lies in the composite effect of conductive graphene. The theoretical analysis reveals that the active modulation is attributed to the changes in the damping rates of the dark modes and the coupling coefficients between bright mode and dark modes. The proposed graphene-metal hybrid metasurfaces provide a way for designing compact dual-band slow-light and modulation devices, which may find potential applications in dual-frequency-channel THz wireless communications. |
| first_indexed | 2024-04-14T01:43:52Z |
| format | Article |
| id | doaj.art-39999462cf3242c0861dcc6bf2d0ba21 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-04-14T01:43:52Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-39999462cf3242c0861dcc6bf2d0ba212022-12-22T02:19:37ZengFrontiers Media S.A.Frontiers in Materials2296-80162022-09-01910.3389/fmats.2022.966535966535Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfacesQuan Li0Hao Su1Jun Zhu2Shuang Wang3School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, ChinaSchool of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, ChinaSchool of Optical and Electronical Information, Zhongshan Torch Polytechnic, Zhongshan, ChinaSchool of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, ChinaActive control of electromagnetically induced transparency (EIT) using metasurfaces has attracted growing interests in recent years, especially the ones that have multiple EIT windows. Here, we give out a metallic metasurface design that can achieve dual EIT (D-EIT) in the terahertz (THz) regime, and propose a strategy to individually and simultaneously control the two windows by integrating graphene structures into the design. The near-field simulations indicate that the physical mechanism lies in the composite effect of conductive graphene. The theoretical analysis reveals that the active modulation is attributed to the changes in the damping rates of the dark modes and the coupling coefficients between bright mode and dark modes. The proposed graphene-metal hybrid metasurfaces provide a way for designing compact dual-band slow-light and modulation devices, which may find potential applications in dual-frequency-channel THz wireless communications.https://www.frontiersin.org/articles/10.3389/fmats.2022.966535/fullelectromagnetically induced transparencydual windowsmetasurfacegraphene-metal hybridactiveterahertz |
| spellingShingle | Quan Li Hao Su Jun Zhu Shuang Wang Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfaces Frontiers in Materials electromagnetically induced transparency dual windows metasurface graphene-metal hybrid active terahertz |
| title | Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfaces |
| title_full | Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfaces |
| title_fullStr | Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfaces |
| title_full_unstemmed | Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfaces |
| title_short | Active control of dual electromagnetically induced transparency in terahertz graphene-metal hybrid metasurfaces |
| title_sort | active control of dual electromagnetically induced transparency in terahertz graphene metal hybrid metasurfaces |
| topic | electromagnetically induced transparency dual windows metasurface graphene-metal hybrid active terahertz |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2022.966535/full |
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