Dual-Function Switchable THz Metamaterial Absorber Based on VO<sub>2</sub> and Photosensitive Silicon

GE Hong-yi; JIA Ke-ke; JIANG Yu-ying; ZHANG Yuan; JIAO Xiao-di; JIA Zhi-yuan; BU Yu-wei; ZHANG Yu-jie

doi:10.12263/DZXB.20240847

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Dual-Function Switchable THz Metamaterial Absorber Based on VO₂ and Photosensitive Silicon

PAPERS | 更新时间：2025-12-08

- Dual-Function Switchable THz Metamaterial Absorber Based on VO₂ and Photosensitive Silicon
- ACTA ELECTRONICA SINICA Vol. 53, Issue 2, Pages: 395-408(2025)
- 作者机构：
  
  1.河南工业大学粮食信息处理与控制教育部重点实验室，河南郑州 450001
  2.河南省粮食光电检测与控制重点实验室，河南郑州450001
  3.河南工业大学信息科学与工程学院，河南郑州 450001
  4.河南工业大学人工智能与大数据学院，河南郑州 450001
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(62271191;61975053);Natural Science Foundation of Henan(222300420040);Key Science and Technology Program of Henan Province(222102110246;222103810072);Key Science and Technology Program of Henan Province(23HASTIT024;22HASTIT017);Innovative Funds Plan of Henan University of Technology(2021ZKCJ04)
- DOI：10.12263/DZXB.20240847
  CLC： TN92;O441.4;TB34
- Received：20 September 2024，
  
  Revised：2024-11-08，
  
  Published：25 February 2025
- 稿件说明：
移动端阅览
葛宏义, 贾柯柯, 蒋玉英, 等. 基于VO₂与光敏硅的双功能可切换THz超材料吸收器[J]. 电子学报, 2025, 53(02): 395-408.

GE Hong-yi, JIA Ke-ke, JIANG Yu-ying, et al. Dual-Function Switchable THz Metamaterial Absorber Based on VO₂ and Photosensitive Silicon[J]. Acta Electronica Sinica, 2025, 53(02): 395-408.
葛宏义, 贾柯柯, 蒋玉英, 等. 基于VO₂与光敏硅的双功能可切换THz超材料吸收器[J]. 电子学报, 2025, 53(02): 395-408. DOI：10.12263/DZXB.20240847

GE Hong-yi, JIA Ke-ke, JIANG Yu-ying, et al. Dual-Function Switchable THz Metamaterial Absorber Based on VO₂ and Photosensitive Silicon[J]. Acta Electronica Sinica, 2025, 53(02): 395-408. DOI：10.12263/DZXB.20240847

摘要

传统可调谐太赫兹宽带吸收器大多具有结构复杂和功能单一等特点，使其实际应用场景受到局限.针对这一问题，本文基于二氧化钒（VO

）的热相变特性与光敏硅（Si）的泵浦光敏感特性提出了一种双功能THz超材料吸收器.通过调节VO

与Si的电导率不仅可实现宽带吸收与电磁诱导透明（Electromagnetically Induced Transparency，EIT）之间的动态切换，还可以动态调节吸收率与EIT谐振峰的振幅值.当

（VO

）=2×10

S/m且

（Si）=10 S/m时，吸收器在1.24~3.65 THz范围内表现为平均吸收率在94%以上的宽频带吸收.当

（VO

）=20 S/m且

（Si）=1×10

S/m时，吸收器的透射传输曲线表现为EIT效应，在1.50~2.50 THz范围内形成了幅度大于90%的谐振透明窗口.此外，利用阻抗匹配和等效电路理论进一步分析了吸收器的物理机制.随后分析了EIT谐振峰的折射率传感特性，

和

的传感灵敏度分别为224 GHz/RIU和310 GHz/RIU，

值分别为3.82和18.5，具有良好的传感性能.最后分析了EIT窗口的慢光效应，结果表明该器件具有良好的慢光效果.本文提出的吸收器结构简单、工作频带宽、可调谐范围大并且双功能可切换，未来在光学器件、电磁隐身和传感检测等领域具有潜在的应用前景.

Abstract

Most of the traditional tunable terahertz broadband absorbers are characterized by complex structure and single function

which make their practical application scenarios limited. To address this problem

this paper proposes a bifunctional THz metamaterial absorber based on the thermal phase transition property of vanadium dioxide (VO

) and the pump light sensitivity property of photosensitive silicon (Si). By adjusting the conductivity of VO

and Si

not only the dynamic switching between broadband absorption and electromagnetically induced transparency (EIT) can be realized

but also the amplitude values of the absorption rate and the resonance peak of EIT can be dynamically adjusted. When

(VO

) = 2×10

S/m and

(Si) = 10 S/m

the absorber exhibits broadband absorption in the range of 1.24~3.65 THz with an

average absorbance more than 94%. When

(VO

) = 20 S/m and

(Si) = 1×10

S/m

the transmittance transmission curve of the absorber exhibits the EIT effect

which creates a resonant transparent window with an amplitude greater than 90% in the range of 1.50~2.50 THz. In addition

the physical mechanism of the absorber was further analyzed using impedance matching and equivalent circuit theory. Subsequently

the refractive index sensing characteristics of the EIT resonant peaks were analyzed

and the sensing sensitivities of

and

were 224 GHz/RIU and 310 GHz/RIU with

values of 3.82 and 18.5

respectively

which provided good sensing performance. Finally

the slow light effect of the EIT window is analyzed

and the results show that the device has good slow light effect. With simple structure

wide operating bandwidth

large tunable range and dual-function switchable

the absorber proposed in this paper has potential future applications in the fields of optical devices

electromagnetic stealth and sensing detection.

关键词

Keywords

references

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⁰

Dual-Function Switchable THz Metamaterial Absorber Based on VO2 and Photosensitive Silicon

DOI：10.12263/DZXB.20240847

摘要

Abstract

关键词

Keywords

references

Dual-Function Switchable THz Metamaterial Absorber Based on VO₂ and Photosensitive Silicon