Modelling and design of human eye inspired concentric cylindrical metalens

Abstract

Metalenses can potentially reduce the size and complexity of existing cameras, displays, and other optical devices, owing to their capability of flexible manipulation of the polarization, amplitude, and phase of light. However, a high meta-atom aspect ratio is still a drawback as it causes difficulty in fabrication of metalens. In this paper, we present the first demonstration of a human-eye inspired metalens with a much lower and constant meta-atom aspect ratio while maintaining the polarization under an arbitrarily polarized excitation in the near-infrared waveband.