Broadband achromatic polarization insensitive metalens over 950 nm bandwidth in the visible and near-infrared

Metalenses are expected to play an increasingly important role in miniaturized and integrated optical imaging components/systems. However, devising broadband achromatic metalenses with high focusing efficiencies is still quite challenging. In this work, we proposed aperture-shared partition phase cooperative manipulation approach for designing a high-efficiency metalens composed of two concentric sub-metalenses. As proof-of-concept, polarization-independent successfully designed the visible near-infrared range from 450 nm 1400 efficiency over 70% wavelength 600 nm. The reported here provides possibility high-performance metalens, which has great potential applications optics.