Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces
Semiconductor-based tunable metasurfaces offer a versatile solution for dynamic light control, attracting significant research interest. However, current designs face the challenge of limited modulation speeds, typically in the MHz range. Here, we propose a multiple-quantum-well-based mid-infrared t...
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Nanyang Technological University
2024
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sg-ntu-dr.10356-1791032024-07-26T15:43:38Z Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces Xu, Jiayang Wang Qijie School of Electrical and Electronic Engineering qjwang@ntu.edu.sg Engineering Physics Mid-IR metasurface High-speed modulator Mie resonance Quantum-confined Stark effect Semiconductor-based tunable metasurfaces offer a versatile solution for dynamic light control, attracting significant research interest. However, current designs face the challenge of limited modulation speeds, typically in the MHz range. Here, we propose a multiple-quantum-well-based mid-infrared tunable metasurface with Mie resonance, realizing an experimental modulation speed of approximately 1 GHz. Electrical tuning is accomplished by quantum-confined Stark effect, utilizing electron resonant tunneling between two coupled quantum wells which is adjustable by voltage. This performance holds potential for high-speed optical communication, dynamic beam shaping, as well as advanced photonic devices. Master's degree 2024-07-22T07:29:52Z 2024-07-22T07:29:52Z 2024 Thesis-Master by Coursework Xu, J. (2024). Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces. Master's thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/179103 https://hdl.handle.net/10356/179103 en application/pdf Nanyang Technological University |
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Asia |
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Singapore Singapore |
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| topic |
Engineering Physics Mid-IR metasurface High-speed modulator Mie resonance Quantum-confined Stark effect |
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Engineering Physics Mid-IR metasurface High-speed modulator Mie resonance Quantum-confined Stark effect Xu, Jiayang Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces |
| description |
Semiconductor-based tunable metasurfaces offer a versatile solution for dynamic light control, attracting significant research interest. However, current designs face the challenge of limited modulation speeds, typically in the MHz range. Here, we propose a multiple-quantum-well-based mid-infrared tunable metasurface with Mie resonance, realizing an experimental modulation speed of approximately 1 GHz. Electrical tuning is accomplished by quantum-confined Stark effect, utilizing electron resonant tunneling between two coupled quantum wells which is adjustable by voltage. This performance holds potential for high-speed optical communication, dynamic beam shaping, as well as advanced photonic devices. |
| author2 |
Wang Qijie |
| author_facet |
Wang Qijie Xu, Jiayang |
| format |
Thesis-Master by Coursework |
| author |
Xu, Jiayang |
| author_sort |
Xu, Jiayang |
| title |
Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces |
| title_short |
Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces |
| title_full |
Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces |
| title_fullStr |
Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces |
| title_full_unstemmed |
Fast electrical spatial light modulation in quantum confined Stark heterostructure metasurfaces |
| title_sort |
fast electrical spatial light modulation in quantum confined stark heterostructure metasurfaces |
| publisher |
Nanyang Technological University |
| publishDate |
2024 |
| url |
https://hdl.handle.net/10356/179103 |
| _version_ |
1814047038836310016 |