Active Terahertz Tuning With Graphene-Loaded Metasurface Enhanced by Quasi-Bound State in Continuum

Yi Ma; Jianzhou Huang; Chenjie Xiong; Xudong Wu; Haoyang Li; Jin Tao; Bin Hu

doi:10.1109/LPT.2026.3659170

Active Terahertz Tuning With Graphene-Loaded Metasurface Enhanced by Quasi-Bound State in Continuum

Yi Ma
, Jianzhou Huang
, Chenjie Xiong
, Xudong Wu
, Haoyang Li
, Jin Tao
, Bin Hu^*

^*此作品的通讯作者

Beijing Institute of Technology
National Key Laboratory on Near-Surface Detection
Southwest Institute of Technical Physics
China Information Communication Technologies Group Corporation (CICT)

科研成果: 期刊稿件 › 文章 › 同行评审

摘要

We propose and experimentally demonstrate a graphene-integrated terahertz (THz) metasurface supporting a quasi-bound state in the continuum (QBIC) mode for active THz modulation. The metasurface, composed of asymmetric split-ring resonators fabricated on a high-resistivity silicon substrate and covered with monolayer graphene, exhibits a sharp resonance enabled by the QBIC effect. By applying a gate voltage via an ionic liquid electrolyte, the Fermi level of graphene is tuned, allowing modulation of the THz transmission. Numerical simulations and temporal coupled-mode theory confirm the resonance characteristics, and experimental measurements reveal a modulation depth exceeding 50% at a gate voltage of 5 V. These results indicate that introducing QBIC effectively enhances the interaction between THz waves and the graphene-loaded metasurface, enabling a high-efficiency, low-cost, and compact approach for dynamic THz wave modulation.

源语言	英语
页（从-至）	615-618
页数	4
期刊	IEEE Photonics Technology Letters
卷	38
期	10
DOI	https://doi.org/10.1109/LPT.2026.3659170
出版状态	已出版 - 2026
已对外发布	是

访问文件

10.1109/LPT.2026.3659170

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{a214e8429b404f3b9ad615386b0487c1,

title = "Active Terahertz Tuning With Graphene-Loaded Metasurface Enhanced by Quasi-Bound State in Continuum",

abstract = "We propose and experimentally demonstrate a graphene-integrated terahertz (THz) metasurface supporting a quasi-bound state in the continuum (QBIC) mode for active THz modulation. The metasurface, composed of asymmetric split-ring resonators fabricated on a high-resistivity silicon substrate and covered with monolayer graphene, exhibits a sharp resonance enabled by the QBIC effect. By applying a gate voltage via an ionic liquid electrolyte, the Fermi level of graphene is tuned, allowing modulation of the THz transmission. Numerical simulations and temporal coupled-mode theory confirm the resonance characteristics, and experimental measurements reveal a modulation depth exceeding 50\% at a gate voltage of 5 V. These results indicate that introducing QBIC effectively enhances the interaction between THz waves and the graphene-loaded metasurface, enabling a high-efficiency, low-cost, and compact approach for dynamic THz wave modulation.",

keywords = "QBIC, Terahertz, active modulation, graphene, metasurface",

author = "Yi Ma and Jianzhou Huang and Chenjie Xiong and Xudong Wu and Haoyang Li and Jin Tao and Bin Hu",

note = "Publisher Copyright: {\textcopyright} 1989-2012 IEEE.",

year = "2026",

doi = "10.1109/LPT.2026.3659170",

language = "English",

volume = "38",

pages = "615--618",

journal = "IEEE Photonics Technology Letters",

issn = "1041-1135",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "10",

}

TY - JOUR

T1 - Active Terahertz Tuning With Graphene-Loaded Metasurface Enhanced by Quasi-Bound State in Continuum

AU - Ma, Yi

AU - Huang, Jianzhou

AU - Xiong, Chenjie

AU - Wu, Xudong

AU - Li, Haoyang

AU - Tao, Jin

AU - Hu, Bin

PY - 2026

Y1 - 2026

N2 - We propose and experimentally demonstrate a graphene-integrated terahertz (THz) metasurface supporting a quasi-bound state in the continuum (QBIC) mode for active THz modulation. The metasurface, composed of asymmetric split-ring resonators fabricated on a high-resistivity silicon substrate and covered with monolayer graphene, exhibits a sharp resonance enabled by the QBIC effect. By applying a gate voltage via an ionic liquid electrolyte, the Fermi level of graphene is tuned, allowing modulation of the THz transmission. Numerical simulations and temporal coupled-mode theory confirm the resonance characteristics, and experimental measurements reveal a modulation depth exceeding 50% at a gate voltage of 5 V. These results indicate that introducing QBIC effectively enhances the interaction between THz waves and the graphene-loaded metasurface, enabling a high-efficiency, low-cost, and compact approach for dynamic THz wave modulation.

AB - We propose and experimentally demonstrate a graphene-integrated terahertz (THz) metasurface supporting a quasi-bound state in the continuum (QBIC) mode for active THz modulation. The metasurface, composed of asymmetric split-ring resonators fabricated on a high-resistivity silicon substrate and covered with monolayer graphene, exhibits a sharp resonance enabled by the QBIC effect. By applying a gate voltage via an ionic liquid electrolyte, the Fermi level of graphene is tuned, allowing modulation of the THz transmission. Numerical simulations and temporal coupled-mode theory confirm the resonance characteristics, and experimental measurements reveal a modulation depth exceeding 50% at a gate voltage of 5 V. These results indicate that introducing QBIC effectively enhances the interaction between THz waves and the graphene-loaded metasurface, enabling a high-efficiency, low-cost, and compact approach for dynamic THz wave modulation.

KW - QBIC

KW - Terahertz

KW - active modulation

KW - graphene

KW - metasurface

UR - https://www.scopus.com/pages/publications/105029293037

U2 - 10.1109/LPT.2026.3659170

DO - 10.1109/LPT.2026.3659170

M3 - Article

AN - SCOPUS:105029293037

SN - 1041-1135

VL - 38

SP - 615

EP - 618

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 10

ER -

Active Terahertz Tuning With Graphene-Loaded Metasurface Enhanced by Quasi-Bound State in Continuum

摘要

访问文件

其它文件与链接

学术指纹

引用此