Photonic spin-selective perfect absorptance on planar metasurfaces driven by chiral quasi-bound states in the continuum
Hongju Li, Hongmiao Zhou, Gangao Wei, Hangsheng Xu, Meng Qin, Jianqiang Liu, Feng Wu
Abstract
varying the azimuthal angle of incident light, due to the periodic helicity sign flip in eigen polarizations around the BIC. Numerical results are consistent with the coupled-mode theory and multipole decomposition method. The spin-selective metasurface absorber empowered by the physics of chiral Q-BICs undoubtedly may promise various applications such as optical filters, polarization detectors, and chiral imaging.
Topics & Concepts
PhysicsMultipole expansionHelicityCircular polarizationRotational symmetryChirality (physics)OpticsPolarization (electrochemistry)Symmetry breakingQuantum mechanicsSpontaneous symmetry breakingMicrostripMechanicsChemistryPhysical chemistryNambu–Jona-Lasinio modelMetamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchOrbital Angular Momentum in Optics