Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz Waves
We present a novel photoreconfigurable metasurface designed for independent and efficient control of electromagnetic waves with identical incident polarization and frequency across the entire spatial domain. The proposed metasurface features a three-layer architecture: a top layer incorporating a go...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/25/1/119 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841548955177975808 |
|---|---|
| author | Zhengxuan Jiang Guowen Ding Xinyao Luo Shenyun Wang |
| author_facet | Zhengxuan Jiang Guowen Ding Xinyao Luo Shenyun Wang |
| author_sort | Zhengxuan Jiang |
| collection | DOAJ |
| description | We present a novel photoreconfigurable metasurface designed for independent and efficient control of electromagnetic waves with identical incident polarization and frequency across the entire spatial domain. The proposed metasurface features a three-layer architecture: a top layer incorporating a gold circular split ring resonator (CSRR) filled with perovskite material and dual <i>C</i>-shaped perovskite resonators; a middle layer of polyimide dielectric; and a bottom layer comprising a perovskite substrate with an oppositely oriented circular split ring resonator filled with gold. By modulating the intensity of a laser beam, we achieve autonomous manipulation of incident circularly polarized terahertz waves in both transmission and reflection modes. Simulation results demonstrate that the metasurface achieves a cross-polarized transmission coefficient of 0.82 without laser illumination and a co-polarization reflection coefficient of 0.8 under laser illumination. Leveraging the geometric phase principle, adjustments to the rotational orientation of the reverse split ring and dual <i>C</i>-shaped perovskite structures enable independent control of transmission and reflection phases. Furthermore, the proposed metasurface induces a +1 order orbital angular momentum in transmission and +2 order in reflection, facilitating beam deflection through metasurface convolution principles. Imaging using metasurface digital imaging technology showcases patterns “NUIST” in reflection and “LOONG” in transmission, illustrating the metasurface design principles via the proposed metasurface. The proposed metasurface’s capability for full-space control and reconfigurability presents promising applications in advanced imaging systems, dynamic beam steering, and tunable terahertz devices, highlighting its potential for future technological advancements. |
| format | Article |
| id | doaj-art-e1eb4a79830c45099ef1f2a918b23fee |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-e1eb4a79830c45099ef1f2a918b23fee2025-01-10T13:20:56ZengMDPI AGSensors1424-82202024-12-0125111910.3390/s25010119Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz WavesZhengxuan Jiang0Guowen Ding1Xinyao Luo2Shenyun Wang3Research Center of Applied Electromagnetics, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaResearch Center of Applied Electromagnetics, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaResearch Center of Applied Electromagnetics, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaResearch Center of Applied Electromagnetics, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaWe present a novel photoreconfigurable metasurface designed for independent and efficient control of electromagnetic waves with identical incident polarization and frequency across the entire spatial domain. The proposed metasurface features a three-layer architecture: a top layer incorporating a gold circular split ring resonator (CSRR) filled with perovskite material and dual <i>C</i>-shaped perovskite resonators; a middle layer of polyimide dielectric; and a bottom layer comprising a perovskite substrate with an oppositely oriented circular split ring resonator filled with gold. By modulating the intensity of a laser beam, we achieve autonomous manipulation of incident circularly polarized terahertz waves in both transmission and reflection modes. Simulation results demonstrate that the metasurface achieves a cross-polarized transmission coefficient of 0.82 without laser illumination and a co-polarization reflection coefficient of 0.8 under laser illumination. Leveraging the geometric phase principle, adjustments to the rotational orientation of the reverse split ring and dual <i>C</i>-shaped perovskite structures enable independent control of transmission and reflection phases. Furthermore, the proposed metasurface induces a +1 order orbital angular momentum in transmission and +2 order in reflection, facilitating beam deflection through metasurface convolution principles. Imaging using metasurface digital imaging technology showcases patterns “NUIST” in reflection and “LOONG” in transmission, illustrating the metasurface design principles via the proposed metasurface. The proposed metasurface’s capability for full-space control and reconfigurability presents promising applications in advanced imaging systems, dynamic beam steering, and tunable terahertz devices, highlighting its potential for future technological advancements.https://www.mdpi.com/1424-8220/25/1/119photoreconfigurablefull-space metasurfaceterahertzwavefront manipulationperovskite |
| spellingShingle | Zhengxuan Jiang Guowen Ding Xinyao Luo Shenyun Wang Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz Waves Sensors photoreconfigurable full-space metasurface terahertz wavefront manipulation perovskite |
| title | Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz Waves |
| title_full | Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz Waves |
| title_fullStr | Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz Waves |
| title_full_unstemmed | Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz Waves |
| title_short | Photoreconfigurable Metasurface for Independent Full-Space Control of Terahertz Waves |
| title_sort | photoreconfigurable metasurface for independent full space control of terahertz waves |
| topic | photoreconfigurable full-space metasurface terahertz wavefront manipulation perovskite |
| url | https://www.mdpi.com/1424-8220/25/1/119 |
| work_keys_str_mv | AT zhengxuanjiang photoreconfigurablemetasurfaceforindependentfullspacecontrolofterahertzwaves AT guowending photoreconfigurablemetasurfaceforindependentfullspacecontrolofterahertzwaves AT xinyaoluo photoreconfigurablemetasurfaceforindependentfullspacecontrolofterahertzwaves AT shenyunwang photoreconfigurablemetasurfaceforindependentfullspacecontrolofterahertzwaves |