A Hybrid Lens to Realize Electrical Real‐Time Super‐Resolution Imaging

Abstract

AbstractReal‐time dynamic super‐resolution focusing technology is crucial for various imaging applications. However, the diffraction limit significantly impedes the achievement of real‐time dynamic super‐resolution imaging. Prior studies within this domain, such as super‐resolution fluorescence imaging and structured illumination microscopy, heavily rely on fluorescent labels and intricate algorithms. This article proposes a novel approach to achieving real‐time dynamic super‐resolution imaging at microwave frequency by integrating the Mikaelian lens derived from conformal transformation optics with the space‐time‐coding metasurface antenna. Real‐time dynamic super‐resolution focusing with a resolution ranging from 0.3λ to 0.4λ is demonstrated at the periphery of the Mikaelian lens with a numerical aperture (NA) of 0.54. The proposed hybrid lens exhibits the capacity to discern features separated by about one‐third of a wavelength with high precision. The work offers a universal solution for achieving dynamic real‐time super‐resolution imaging electrically, which can be extended to terahertz waves, visible light, and other wave fields, such as acoustic and flexural waves.