Coded digital inspired tunable metamaterial absorber based on liquid crystals

被引：1

作者：

Yang, Jun ^{[1
]}

Zheng, Guanghong ^{[2
]}

Zha, Xiaojie ^{[2
]}

Xi, Hongzhu ^{[3
]}

Yin, Zhiping ^{[1
]}

Zhu, Jianfei ^{[2
]}

Deng, Guangsheng ^{[1
]}

机构：

[1] Hefei Univ Technol, Acad Optoelect Technol, Natl Engn Lab Special Display Technol, Hefei 230009, Peoples R China

[2] Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Anhui Prov Key Lab Measuring Theory & Precis Inst, Hefei 230009, Peoples R China

[3] Anhui Huadong Photoelect Technol Res Inst Co Ltd, Wuhu 241002, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2024年 / 565卷

关键词：

Terahertz; Metamaterials; Absorber; Liquid crystal; Tunable; TERAHERTZ; METASURFACE;

D O I：

10.1016/j.optcom.2024.130653

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper proposes a fully electrically controlled metamaterial absorber based on liquid crystal (LC) in the terahertz band. The proposed structure consists of a metal resonant and grating layers, with LC injected into the formed cavity. By encoding the grating and applying different voltages, LC molecules are selectively oriented in specific regions within the structure, enabling rapid switching between various specific absorption states. Experimental results indicate that rapid responses for five states can be achieved within the frequency range from 116.5 GHz to 121.8 GHz. Compared to traditional LC absorbers, this structure allows reflection modulation through different bias voltages and enables fast modulation of specific states through grating encoding.

引用

页数：7

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