Far-field superresolution imaging via k-space superoscillation

Abstract The resolution of an imaging system has long been constrained by the Abbe-Rayleigh diffraction limit. While significant progress has been made in developing superresolution techniques, many approaches rely on near-field scanning, fluorescence labeling, and are hindered by trade-offs among resolution, field-of-view, and energy efficiency. Here, we introduce a conceptually new approach that enables far-field, label-free superresolution imaging while avoiding the image-plane sidebands inhe