Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene Rings
A dual-frequency absorber with periodic double-layer graphene ring arrays separated by dielectric spacer is proposed. Coupled-mode theory and finite difference time domain method are used to analyze the perfect absorption and the absorption mechanism. Moreover, the influences of structural parameter...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8913575/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849417241966149632 |
|---|---|
| author | Wei Su Xinyue Chen Zhen Geng |
| author_facet | Wei Su Xinyue Chen Zhen Geng |
| author_sort | Wei Su |
| collection | DOAJ |
| description | A dual-frequency absorber with periodic double-layer graphene ring arrays separated by dielectric spacer is proposed. Coupled-mode theory and finite difference time domain method are used to analyze the perfect absorption and the absorption mechanism. Moreover, the influences of structural parameters and chemical potential of graphene on the peak positions have been investigated. Benefiting from chemical potential can be controlled by external bias voltage, thus the proposed structure can be used as a dynamically tunable absorber. Such simple absorber has potential applications in optical storage devices and frequency-selective detectors for terahertz regime. |
| format | Article |
| id | doaj-art-45b0c8abc65c4896938b7fc357dcfe1f |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-45b0c8abc65c4896938b7fc357dcfe1f2025-08-20T03:32:54ZengIEEEIEEE Photonics Journal1943-06552019-01-011161810.1109/JPHOT.2019.29560538913575Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene RingsWei Su0https://orcid.org/0000-0001-9788-2545Xinyue Chen1Zhen Geng2https://orcid.org/0000-0002-6502-6717Department of Mathematics and Physics, Hohai University, Changzhou, ChinaDepartment of Mathematics and Physics, Hohai University, Changzhou, ChinaDepartment of Mathematics and Physics, Hohai University, Changzhou, ChinaA dual-frequency absorber with periodic double-layer graphene ring arrays separated by dielectric spacer is proposed. Coupled-mode theory and finite difference time domain method are used to analyze the perfect absorption and the absorption mechanism. Moreover, the influences of structural parameters and chemical potential of graphene on the peak positions have been investigated. Benefiting from chemical potential can be controlled by external bias voltage, thus the proposed structure can be used as a dynamically tunable absorber. Such simple absorber has potential applications in optical storage devices and frequency-selective detectors for terahertz regime.https://ieeexplore.ieee.org/document/8913575/Dynamically tunablegrapheneperfect absorber. |
| spellingShingle | Wei Su Xinyue Chen Zhen Geng Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene Rings IEEE Photonics Journal Dynamically tunable graphene perfect absorber. |
| title | Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene Rings |
| title_full | Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene Rings |
| title_fullStr | Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene Rings |
| title_full_unstemmed | Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene Rings |
| title_short | Dynamically Tunable Dual-Frequency Terahertz Absorber Based on Graphene Rings |
| title_sort | dynamically tunable dual frequency terahertz absorber based on graphene rings |
| topic | Dynamically tunable graphene perfect absorber. |
| url | https://ieeexplore.ieee.org/document/8913575/ |
| work_keys_str_mv | AT weisu dynamicallytunabledualfrequencyterahertzabsorberbasedongraphenerings AT xinyuechen dynamicallytunabledualfrequencyterahertzabsorberbasedongraphenerings AT zhengeng dynamicallytunabledualfrequencyterahertzabsorberbasedongraphenerings |