Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront Manipulation
As a promising platform for versatile electromagnetic (EM) manipulations, metasurfaces have drawn wide interest in recent years due to their unique EM properties and small footprints. However, although great efforts have been made to achieve multifunctionalities, the design of tunable metasurfaces w...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/3/344 |
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| author | Jie Hu Yujie Chen Wenting Zhang Ziyi Tang Xiang Lan Qinrong Deng Hengyu Cui Ling Li Yijia Huang |
| author_facet | Jie Hu Yujie Chen Wenting Zhang Ziyi Tang Xiang Lan Qinrong Deng Hengyu Cui Ling Li Yijia Huang |
| author_sort | Jie Hu |
| collection | DOAJ |
| description | As a promising platform for versatile electromagnetic (EM) manipulations, metasurfaces have drawn wide interest in recent years due to their unique EM properties and small footprints. However, although great efforts have been made to achieve multifunctionalities, the design of tunable metasurfaces with high compactness is still challenging. Here, a simple yet powerful design methodology for single-layered reconfigurable metasurfaces composed of nonvolatile phase-change material Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te<sub>1</sub> (GSST) is proposed with average working amplitudes of 72.6% and 53% at different crystallization levels. The proposed metasurfaces could not only enable independent phase control at different crystallization levels but also introduced another polarization degree of freedom. As a proof of concept, we numerically demonstrate three kinds of metadevices in the infrared region achieving a multi-focus metalens with tunable foci, multistate vortex beam generator with adjustable topological charges and multi-channel meta-hologram with three independent information channels. It is believed that these multifunctional metasurfaces with both tunability and compactness are promising for various applications including information encryption, chiroptical spectroscopy, chiral imaging and wireless communication. |
| first_indexed | 2024-03-11T06:01:47Z |
| format | Article |
| id | doaj.art-ff079f89f4914919b38f0fc5c7d77f14 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T06:01:47Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-ff079f89f4914919b38f0fc5c7d77f142023-11-17T13:19:42ZengMDPI AGPhotonics2304-67322023-03-0110334410.3390/photonics10030344Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront ManipulationJie Hu0Yujie Chen1Wenting Zhang2Ziyi Tang3Xiang Lan4Qinrong Deng5Hengyu Cui6Ling Li7Yijia Huang8Laboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaTheoretical Physics Division, Chern Institute of Mathematics, Nankai University, Tianjin 300071, ChinaLaboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaLaboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaLaboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaLaboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaLaboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaLaboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaLaboratory of Micro-Nano Optics, College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaAs a promising platform for versatile electromagnetic (EM) manipulations, metasurfaces have drawn wide interest in recent years due to their unique EM properties and small footprints. However, although great efforts have been made to achieve multifunctionalities, the design of tunable metasurfaces with high compactness is still challenging. Here, a simple yet powerful design methodology for single-layered reconfigurable metasurfaces composed of nonvolatile phase-change material Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te<sub>1</sub> (GSST) is proposed with average working amplitudes of 72.6% and 53% at different crystallization levels. The proposed metasurfaces could not only enable independent phase control at different crystallization levels but also introduced another polarization degree of freedom. As a proof of concept, we numerically demonstrate three kinds of metadevices in the infrared region achieving a multi-focus metalens with tunable foci, multistate vortex beam generator with adjustable topological charges and multi-channel meta-hologram with three independent information channels. It is believed that these multifunctional metasurfaces with both tunability and compactness are promising for various applications including information encryption, chiroptical spectroscopy, chiral imaging and wireless communication.https://www.mdpi.com/2304-6732/10/3/344metasurfacephase change materialgeometric phasepropagation phasewavefront manipulation |
| spellingShingle | Jie Hu Yujie Chen Wenting Zhang Ziyi Tang Xiang Lan Qinrong Deng Hengyu Cui Ling Li Yijia Huang Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront Manipulation Photonics metasurface phase change material geometric phase propagation phase wavefront manipulation |
| title | Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront Manipulation |
| title_full | Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront Manipulation |
| title_fullStr | Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront Manipulation |
| title_full_unstemmed | Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront Manipulation |
| title_short | Single-Layered Phase-Change Metasurfaces Achieving Polarization- and Crystallinity-Dependent Wavefront Manipulation |
| title_sort | single layered phase change metasurfaces achieving polarization and crystallinity dependent wavefront manipulation |
| topic | metasurface phase change material geometric phase propagation phase wavefront manipulation |
| url | https://www.mdpi.com/2304-6732/10/3/344 |
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