Exceptional points in chiral metasurface based on graphene strip arrays

We investigate the exceptional points (EPs) in chiral metasurfaces composed of periodic arrays of two orthogonally orientated graphene strips in the terahertz frequency. By tuning the geometric parameters and incident wavelengths, the EPs emerge as two eigenvalues of the transmission matrix ...

Source: Journal of the Optical Society of America B - August 14, 2019 Category: Physics Authors: Jinyang Li Jie Fu Qing Liao Shaolin Ke Source Type: research