Perfect diffraction metagratings supporting bound states in the continuum and exceptional points

• Published in: arXiv.org
• Main Authors: Zi-Lan Deng, Feng-Jun, Li, Li, Huanan, Li, Xiangping, Alù, Andrea
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 22.09.2021
• Subjects: Coupling; Diffraction efficiency; Insulators; Physics - Optics; Selectivity; Wave fronts; Waveguides

Resonance coupling in non-Hermitian systems can lead to exotic features, such as bound states in the continuum (BICs) and exceptional points (EPs), which have been widely employed to control the propagation and scattering of light. Yet, similar tools to control diffraction and engineering spatial wa...