High <i>Q</i>-Value Terahertz Metamaterial Sensor Based on Double Ellipse Structure

Qingpeng Zeng; Fangrong Hu; Yuan Zhou; Yingchang Zou; Zhiyou Wang

doi:10.3788/AOS202141.1428001

Acta Optica Sinica, Volume. 41, Issue 14, 1428001(2021)

High Q-Value Terahertz Metamaterial Sensor Based on Double Ellipse Structure

Qingpeng Zeng¹, Fangrong Hu^1、*, Yuan Zhou², Yingchang Zou², and Zhiyou Wang²

¹School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China

²Hunan Engineering Technology Research Center of Optoelectronic Health Detection, School of Electronic and Electrical Engineering, Changsha University, Changsha, Hunan 410022, China

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Fig. 1. Schematic diagram of the sensor structure. (a) Structure of the sensor; (b) top view of the unit structure; (c) transmission spectrum of the sensor

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Fig. 2. Influence of structural parameters on the transmission spectrum. (a) P_X; (b) P_Y

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Fig. 3. Influence of structural parameters on the sensor. (a)--(c) Influence of structural parameters on the transmission spectrum; (d)--(f) influence of structural parameters on Q value and FWHM

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Fig. 4. Influence of the object to be tested on the sensing performance. (a)--(b) Influence of t on the transmission spectrum and frequency shift; (c)--(d) influence of n on the transmission spectrum and frequency shift; (e)--(f) influence of β on Q value and S

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Fig. 5. Resonance mechanism. (a) Electric field distribution; (b) electric quadrupole model

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Table 1. Parameters of the optimized sensor
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Table 1. Parameters of the optimized sensor
P_X /μm P_Y /μm a /μm b /μm d /μm θ /(°)
120 120 30 10 60 6

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Qingpeng Zeng, Fangrong Hu, Yuan Zhou, Yingchang Zou, Zhiyou Wang. High Q-Value Terahertz Metamaterial Sensor Based on Double Ellipse Structure[J]. Acta Optica Sinica, 2021, 41(14): 1428001

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