Broadband and parallel multiple-order optical spatial differentiation enabled by Bessel vortex modulated metalens.

ABSTRACT: Optical analog image processing technology is expected to provide an effective solution for high-throughput and real-time data processing with low power consumption. In various operations, optical spatial differential operations are essential in edge extraction, data compression, and feature classification. Unfortunately, existing methods can only perform low-order or selectively perform a particular high-order differential operation. Here, we propose and experimentally demonstrate a Bessel vortex modulated metalens composed of a single complex amplitude metasurface, which can perform multiple-order radial differential operations over a wide band by presetting the order of the corresponding Bessel vortex. This architecture further enables angle multiplexing to create multiple information c

SUBMITTER: Huo P 

PROVIDER: S-EPMC11490636 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature