Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface
In this paper, we propose a reflective polarizer in terahertz regime, which utilizes the Bulk-Dirac-Semimetal (BDS) metasurface can be dynamically tuned in broadband. The proposed polarizer is capable of converting the linear polarized wave into the circular polarized or the cross polarized waves by...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/3/228 |
| _version_ | 1798004895314345984 |
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| author | Yannan Jiang Jing Zhao Jiao Wang |
| author_facet | Yannan Jiang Jing Zhao Jiao Wang |
| author_sort | Yannan Jiang |
| collection | DOAJ |
| description | In this paper, we propose a reflective polarizer in terahertz regime, which utilizes the Bulk-Dirac-Semimetal (BDS) metasurface can be dynamically tuned in broadband. The proposed polarizer is capable of converting the linear polarized wave into the circular polarized or the cross polarized waves by adjusting the Fermi energy (<i>E<sub>F</sub></i>) of the BDS. In the frequency range of 0.51 THz and 1.06 THz, the incident linear polarized wave is converted into a circular polarized wave with an axial ratio (AR) less than 3 dB when <i>E<sub>F</sub></i> = 30 meV. When <i>E<sub>F</sub></i> = 45 meV, the cross-polarization conversion is achieved with the polarization conversion ratio (PCR) greater than 90% in the band of 0.57−1.12 THz. Meanwhile, the conversion efficiencies for both polarization conversions are in excess of 90%. Finally, the physical mechanism is revealed by the decomposition of two orthogonal components and the verification is presented by the interference theory. |
| first_indexed | 2024-04-11T12:30:42Z |
| format | Article |
| id | doaj.art-f2da5d8b2b504fdb8980877a3b9de9bc |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T12:30:42Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-f2da5d8b2b504fdb8980877a3b9de9bc2022-12-22T04:23:45ZengMDPI AGCrystals2073-43522020-03-0110322810.3390/cryst10030228cryst10030228Reconfigurable Polarizer Based on Bulk Dirac Semimetal MetasurfaceYannan Jiang0Jing Zhao1Jiao Wang2Guangxi Key Laboratory of Wireless Wideband Communication & Signal Processing, Guilin 541000, ChinaGuangxi Key Laboratory of Wireless Wideband Communication & Signal Processing, Guilin 541000, ChinaGuangxi Key Laboratory of Wireless Wideband Communication & Signal Processing, Guilin 541000, ChinaIn this paper, we propose a reflective polarizer in terahertz regime, which utilizes the Bulk-Dirac-Semimetal (BDS) metasurface can be dynamically tuned in broadband. The proposed polarizer is capable of converting the linear polarized wave into the circular polarized or the cross polarized waves by adjusting the Fermi energy (<i>E<sub>F</sub></i>) of the BDS. In the frequency range of 0.51 THz and 1.06 THz, the incident linear polarized wave is converted into a circular polarized wave with an axial ratio (AR) less than 3 dB when <i>E<sub>F</sub></i> = 30 meV. When <i>E<sub>F</sub></i> = 45 meV, the cross-polarization conversion is achieved with the polarization conversion ratio (PCR) greater than 90% in the band of 0.57−1.12 THz. Meanwhile, the conversion efficiencies for both polarization conversions are in excess of 90%. Finally, the physical mechanism is revealed by the decomposition of two orthogonal components and the verification is presented by the interference theory.https://www.mdpi.com/2073-4352/10/3/228reconfigurable polarizertunable metasurfacebroadbandbulk-dirac-semimetal |
| spellingShingle | Yannan Jiang Jing Zhao Jiao Wang Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface Crystals reconfigurable polarizer tunable metasurface broadband bulk-dirac-semimetal |
| title | Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface |
| title_full | Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface |
| title_fullStr | Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface |
| title_full_unstemmed | Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface |
| title_short | Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface |
| title_sort | reconfigurable polarizer based on bulk dirac semimetal metasurface |
| topic | reconfigurable polarizer tunable metasurface broadband bulk-dirac-semimetal |
| url | https://www.mdpi.com/2073-4352/10/3/228 |
| work_keys_str_mv | AT yannanjiang reconfigurablepolarizerbasedonbulkdiracsemimetalmetasurface AT jingzhao reconfigurablepolarizerbasedonbulkdiracsemimetalmetasurface AT jiaowang reconfigurablepolarizerbasedonbulkdiracsemimetalmetasurface |