Fig. 1: Anisotropic property of an h-SRR.
From: All-optical active THz metasurfaces for ultrafast polarization switching and dynamic beam splitting
a Schematic illustrations of an anisotropic h-SRR with different configurations relative to the incident electric field polarization. b Simulated transmission intensity spectra of the h-SRR resonator array. All three fundamental modes are simultaneously excited by rotating the h-SRR by 45° relative to the linear incident polarization (solid dark blue line). Intrinsic resonance modes (dashed lines) are induced by orthogonal polarization excitation along the optical axes of the resonator in the transmission spectra, with the respective surface current (solid-line arrows) and electric field (gradient color) distributions
