High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal Metasurface
Asymmetric optical transmission plays a key role in many optical systems. In this work, we propose and numerically demonstrate a dielectric–metal metasurface that can achieve high-performance asymmetric transmission for linearly polarized light in the near-infrared region. Most notably, it supports...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/9/2410 |
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| author | Wenbing Liu Lirong Huang Jifei Ding Chenkai Xie Yi Luo Wei Hong |
| author_facet | Wenbing Liu Lirong Huang Jifei Ding Chenkai Xie Yi Luo Wei Hong |
| author_sort | Wenbing Liu |
| collection | DOAJ |
| description | Asymmetric optical transmission plays a key role in many optical systems. In this work, we propose and numerically demonstrate a dielectric–metal metasurface that can achieve high-performance asymmetric transmission for linearly polarized light in the near-infrared region. Most notably, it supports a forward transmittance peak (with a transmittance of 0.70) and a backward transmittance dip (with a transmittance of 0.07) at the same wavelength of 922 nm, which significantly enhances operation bandwidth and the contrast ratio between forward and backward transmittances. Mechanism analyses reveal that the forward transmittance peak is caused by the unidirectional excitation of surface plasmon polaritons and the first Kerker condition, whereas the backward transmittance dip is due to reflection from the metal film and a strong toroidal dipole response. Our work provides an alternative and simple way to obtain high-performance asymmetric transmission devices. |
| first_indexed | 2024-03-10T07:22:25Z |
| format | Article |
| id | doaj.art-a84651cb000d489fb908ec8f0c6c3457 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T07:22:25Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a84651cb000d489fb908ec8f0c6c34572023-11-22T14:32:09ZengMDPI AGNanomaterials2079-49912021-09-01119241010.3390/nano11092410High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal MetasurfaceWenbing Liu0Lirong Huang1Jifei Ding2Chenkai Xie3Yi Luo4Wei Hong5Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Rd, Wuhan 430074, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Rd, Wuhan 430074, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Rd, Wuhan 430074, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Rd, Wuhan 430074, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Rd, Wuhan 430074, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Rd, Wuhan 430074, ChinaAsymmetric optical transmission plays a key role in many optical systems. In this work, we propose and numerically demonstrate a dielectric–metal metasurface that can achieve high-performance asymmetric transmission for linearly polarized light in the near-infrared region. Most notably, it supports a forward transmittance peak (with a transmittance of 0.70) and a backward transmittance dip (with a transmittance of 0.07) at the same wavelength of 922 nm, which significantly enhances operation bandwidth and the contrast ratio between forward and backward transmittances. Mechanism analyses reveal that the forward transmittance peak is caused by the unidirectional excitation of surface plasmon polaritons and the first Kerker condition, whereas the backward transmittance dip is due to reflection from the metal film and a strong toroidal dipole response. Our work provides an alternative and simple way to obtain high-performance asymmetric transmission devices.https://www.mdpi.com/2079-4991/11/9/2410metasurfaceasymmetric optical transmissionsurface plasmon polaritonsKerker conditions |
| spellingShingle | Wenbing Liu Lirong Huang Jifei Ding Chenkai Xie Yi Luo Wei Hong High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal Metasurface Nanomaterials metasurface asymmetric optical transmission surface plasmon polaritons Kerker conditions |
| title | High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal Metasurface |
| title_full | High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal Metasurface |
| title_fullStr | High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal Metasurface |
| title_full_unstemmed | High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal Metasurface |
| title_short | High-Performance Asymmetric Optical Transmission Based on a Dielectric–Metal Metasurface |
| title_sort | high performance asymmetric optical transmission based on a dielectric metal metasurface |
| topic | metasurface asymmetric optical transmission surface plasmon polaritons Kerker conditions |
| url | https://www.mdpi.com/2079-4991/11/9/2410 |
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