| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Bound States in the Continuum in One-Dimensional Dimerized Plasmonic Gratings |
| Chen Huang , Qian-Ju Song , Peng Hu , Shi-Wei Dai , Hong Xiang**, Dezhuan Han** |
| College of Physics, Chongqing University, Chongqing 401331, China |
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| Cite this article: |
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Chen Huang , Qian-Ju Song , Peng Hu et al 2020 Chin. Phys. Lett. 37 067802 |
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Abstract A simple one-dimensional subwavelength plasmonic grating can support symmetry protected bound states in the continuum (BICs), but not necessarily for the non-symmetry protected BICs. By dimerizing the lattice, non-symmetry protected BIC can be supported on the dimerized grating and can be tuned readily. The mechanism for the BICs in the dimerized grating is interpreted in the viewpoint of interference between the electromagnetic multipoles.
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Received: 11 March 2020
Published: 26 May 2020
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| PACS: |
78.67.Pt
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(Multilayers; superlattices; photonic structures; metamaterials)
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42.79.Dj
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(Gratings)
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42.70.Qs
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(Photonic bandgap materials)
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| Fund: *Supported by the National Natural Science Foundation of China (Grant Nos. 11804288 and 91750102) and the Projects of President Foundation of Chongqing University (Grant No. 2019CDXZWL002). |
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