Brillouin zone folding driven bound states in the continuum
Abstract Non-radiative bound states in the continuum (BICs) allow construction of resonant cavities with confined electromagnetic energy and high-quality (Q) factors. However, the sharp decay of the Q factor in the momentum space limits their usefulness for device applications. Here we demonstrate a...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-38367-y |
| _version_ | 1797822783452872704 |
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| author | Wenhao Wang Yogesh Kumar Srivastava Thomas CaiWei Tan Zhiming Wang Ranjan Singh |
| author_facet | Wenhao Wang Yogesh Kumar Srivastava Thomas CaiWei Tan Zhiming Wang Ranjan Singh |
| author_sort | Wenhao Wang |
| collection | DOAJ |
| description | Abstract Non-radiative bound states in the continuum (BICs) allow construction of resonant cavities with confined electromagnetic energy and high-quality (Q) factors. However, the sharp decay of the Q factor in the momentum space limits their usefulness for device applications. Here we demonstrate an approach to achieve sustainable ultrahigh Q factors by engineering Brillouin zone folding-induced BICs (BZF-BICs). All the guided modes are folded into the light cone through periodic perturbation that leads to the emergence of BZF-BICs possessing ultrahigh Q factors throughout the large, tunable momentum space. Unlike conventional BICs, BZF-BICs show perturbation-dependent dramatic enhancement of the Q factor in the entire momentum space and are robust against structural disorders. Our work provides a unique design path for BZF-BIC-based silicon metasurface cavities with extreme robustness against disorder while sustaining ultrahigh Q factors, offering potential applications in terahertz devices, nonlinear optics, quantum computing, and photonic integrated circuits. |
| first_indexed | 2024-03-13T10:14:16Z |
| format | Article |
| id | doaj.art-189b9244a1774f0bba98db7d7f95cc6d |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-13T10:14:16Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-189b9244a1774f0bba98db7d7f95cc6d2023-05-21T11:19:53ZengNature PortfolioNature Communications2041-17232023-05-011411910.1038/s41467-023-38367-yBrillouin zone folding driven bound states in the continuumWenhao Wang0Yogesh Kumar Srivastava1Thomas CaiWei Tan2Zhiming Wang3Ranjan Singh4Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of ChinaDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityInstitute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of ChinaDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityAbstract Non-radiative bound states in the continuum (BICs) allow construction of resonant cavities with confined electromagnetic energy and high-quality (Q) factors. However, the sharp decay of the Q factor in the momentum space limits their usefulness for device applications. Here we demonstrate an approach to achieve sustainable ultrahigh Q factors by engineering Brillouin zone folding-induced BICs (BZF-BICs). All the guided modes are folded into the light cone through periodic perturbation that leads to the emergence of BZF-BICs possessing ultrahigh Q factors throughout the large, tunable momentum space. Unlike conventional BICs, BZF-BICs show perturbation-dependent dramatic enhancement of the Q factor in the entire momentum space and are robust against structural disorders. Our work provides a unique design path for BZF-BIC-based silicon metasurface cavities with extreme robustness against disorder while sustaining ultrahigh Q factors, offering potential applications in terahertz devices, nonlinear optics, quantum computing, and photonic integrated circuits.https://doi.org/10.1038/s41467-023-38367-y |
| spellingShingle | Wenhao Wang Yogesh Kumar Srivastava Thomas CaiWei Tan Zhiming Wang Ranjan Singh Brillouin zone folding driven bound states in the continuum Nature Communications |
| title | Brillouin zone folding driven bound states in the continuum |
| title_full | Brillouin zone folding driven bound states in the continuum |
| title_fullStr | Brillouin zone folding driven bound states in the continuum |
| title_full_unstemmed | Brillouin zone folding driven bound states in the continuum |
| title_short | Brillouin zone folding driven bound states in the continuum |
| title_sort | brillouin zone folding driven bound states in the continuum |
| url | https://doi.org/10.1038/s41467-023-38367-y |
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