Graphene perfect absorber based on degenerate critical coupling of toroidal mode

Xu, Rongyang; Fujikata, Junichi; Takahara, Junichi

Optics Letters, 2023, 48(6), 1490-1493

Number of Access:304（2025-08-14 06:01 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/91298

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Title
Graphene perfect absorber based on degenerate critical coupling of toroidal mode
Creator
CreatorName
Xu, Rongyang
NRID
1000000869159 1000000869159
CreatorName
Fujikata, Junichi
NRID
1000090273606 1000090273606
researchmap permalink
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Scopus Author ID
7101818564 7101818564
ORCID
0000-0002-3683-626X 0000-0002-3683-626X
CreatorName
Takahara, Junichi
Description
Rongyang Xu, Junichi Fujikata, and Junichi Takahara, "Graphene perfect absorber based on degenerate critical coupling of toroidal mode," Opt. Lett. 48, 1490-1493 (2023)
Abstract
Graphene is a two-dimensional material with great potential for photodetection and light modulation applications owing to its high charge mobility. However, the light absorption of graphene in the near-infrared range is only 2.3%, limiting the sensitivity of graphene-based devices. In this study, we propose a graphene perfect absorber based on degenerate critical coupling comprising monolayer graphene and a hollow silicon Mie resonator array. In particular, monolayer graphene achieves perfect absorption by controlling the periods and holes of the Mie resonators. The proposed graphene perfect absorber can significantly improve the sensitivity of graphene-based devices.
Publisher
Optica Publishing Group
Source Title
Optics Letters
Volume (Issue)
48(6)
Page
1490-1493
Date of Issued
2023-03-15
Language
English
Handle URL
https://hdl.handle.net/11094/91298
PISSN
01469592
eISSN
15394794
NCID
AA00764838
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1364/OL.483486
Access Rights
open access
CopyRight
© 2023 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article