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
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.
收稿日期: 2020-03-11
出版日期: 2020-05-26
:
78.67.Pt
(Multilayers; superlattices; photonic structures; metamaterials)
42.79.Dj
(Gratings)
42.70.Qs
(Photonic bandgap materials)
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2020, Vol. 37 
