Electrically tunable terahertz switch based on superconducting subwavelength hole arrays
| Autor: | Ling Jiang, Borui Bian, Mei Yu, Jingjing He, Runfeng Su, Chun Li, Qingxiao Ma, Xiaoming Liu, Min Hua, Yan Teng, Chengtao Jiang |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Terahertz radiation business.industry Extraordinary optical transmission Surface plasmon polariton Atomic and Molecular Physics and Optics Terahertz spectroscopy and technology Planar Optics Modulation Transmission coefficient Electrical and Electronic Engineering business Engineering (miscellaneous) Voltage |
| Zdroj: | Applied optics. 60(25) |
| ISSN: | 1539-4522 |
| Popis: | We experimentally demonstrate an electrically tunable superconducting device capable of switching the extraordinary terahertz (THz) transmission. The planar device consists of subwavelength hole arrays with real-time control capability. The maximum transmission coefficient at 0.33 THz is 0.98 and decreases to 0.17 when the applied voltage only increases to 1.3 V. A relative intensity modulation of 82.7% is observed, making this device an efficient THz switch. Additionally, this device exhibits good narrow-bandpass characteristics within 2 THz, which can be used as a frequency-selective component. This study offers an ideal tuning method and delivers a promising approach for designing active and miniaturized devices in THz cryogenic systems. |
| Databáze: | OpenAIRE |
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