Abstract

The realization of bound states in the continuum (BICs) in optical systems has been relying mainly on symmetry breaking. In contrast, another mechanism, known as resonance-trapped (or Friedrich–Wintgen) scenario, has been reported in the limited scope of dielectric resonant inclusions or at off-$\Gamma$ points. In this Letter, we demonstrate that the coupling coefficient between two coplanar metallic split-ring resonators can be tuned to satisfy the Friedrich–Wintgen BIC condition with normal terahertz (THz) incidence when metals are modeled as perfect electric conductors. Temporal coupled-mode theory is applied to validate the results. Experimentally, a BIC-induced cloaking effect has been observed, owing to the intrinsic dissipation loss of the constitutive materials. Our findings suggest an alternative strategy to construct BICs in metallic metasurfaces apart from conventional symmetry-breaking methods.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Terahertz investigation of bound states in the continuum of metallic metasurfaces

Xiaoguang Zhao, Chunxu Chen, Kelson Kaj, Ian Hammock, Yuwei Huang, Richard D. Averitt, and Xin Zhang
Optica 7(11) 1548-1554 (2020)

Frequency conversion in nano-waveguides using bound-state-in-continuum

Xiao Xiong, Lin Wu, Ping Bai, Ching Eng Png, Jun Rong Ong, and Leonid Krivitsky
Opt. Lett. 46(2) 242-245 (2021)

Multiplexing-oriented plasmon-MoS2 hybrid metasurfaces driven by nonlinear quasi bound states in the continuum

Qun Ren, Feng Feng, Xiang Yao, Quan Xu, Ming Xin, Zhihao Lan, Jianwei You, Xiaofei Xiao, and Wei E. I. Sha
Opt. Express 29(4) 5384-5396 (2021)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription