Simulation of terahertz metasurface controlled by light field based on novel perovskite materials

Li Yifan; Yang Rui; Xie Peihan; Yang He; Lou Cunguang; Liu Xiuling; Yao Jianquan

doi:10.11884/HPLPB202335.230128

Volume 35 Issue 12

Nov. 2023

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Article Navigation > High Power Laser and Particle Beams > 2023 > 35(12): 129001

Li Yifan, Yang Rui, Xie Peihan, et al. Simulation of terahertz metasurface controlled by light field based on novel perovskite materials[J]. High Power Laser and Particle Beams, 2023, 35: 129001. doi: 10.11884/HPLPB202335.230128

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Li Yifan, Yang Rui, Xie Peihan, et al. Simulation of terahertz metasurface controlled by light field based on novel perovskite materials[J]. High Power Laser and Particle Beams, 2023, 35: 129001. doi: 10.11884/HPLPB202335.230128

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Simulation of terahertz metasurface controlled by light field based on novel perovskite materials

doi: 10.11884/HPLPB202335.230128

1.
Hebei Key Laboratory of Digital Medical Engineering, College of Electronic and Information Engineering, Hebei University, Hebei Baoding 071000, China
2.
Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China

Received Date: 2023-05-11
Accepted Date: 2023-09-22
Rev Recd Date: 2023-10-13

Available Online: 2023-11-14

Publish Date: 2023-12-15

Abstract

Abstract

In recent years, the terahertz control technology has shown a good application prospect in the fields of detection, imaging, wireless network communication and so on, and has attracted the attention of scholars at home and abroad. To achieve efficient terahertz regulation, an efficient and low-cost material is urgently needed. New perovskite materials have become one of the most promising candidates for high stability optoelectronic devices due to their excellent photoelectric properties. At the same time, perovskite has the advantages of simple preparation process and mass production, thus it is very suitable to be used as the active material of terahertz metamaterials. The properties of active materials can be changed by external excitation, and terahertz waves can be adjusted flexibly. Therefore, this paper selects a new perovskite material with external optical field to regulate terahertz waves, and analyzes the influence of two states-before the optical field action (insulating state) and after the optical field action (metallic state) on the amplitude and phase of the unit structure in the wide band of terahertz. A perovskite-based 1bit terahertz coding metasurface structure with flexible light field regulation was designed. The structure is composed of organic and inorganic hybrid perovskite CH₃NH₃PbI₃ (MAPbI₃), polyimide and aluminum. The simulation results of CST show that the metasurface structure can realize 180° phase difference change of wide spectrum (0.1, 1, 2, 6 THz) terahertz waves under the control of light field. After the design of metasurface coding structure, the same coding sequence can realize the transformation of far-field beam. The results show that the encoding metasurface based on optical field manipulation of perovskite materials provides a new idea for realizing flexible terahertz wave regulation, and has great application potential in terahertz communication, security check, biomedical imaging and so on.
- terahertz,
- perovskite,
- light field regulation,
- coding metasurface,
- phase

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References(27)

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