Advanced Optical Materials · 2023 · 41 citations · 155 references
EngineeringWavefront ShapingMetasurfacesMetamaterialsBiomedical EngineeringElectromagnetic MetamaterialsOptical PropertiesPolarization DetectionOptical SystemsNanophotonicsLight Field ImagingOphthalmologySuper-resolutionMetaopticsBiophotonicsComputational Optical ImagingApplied PhysicsArbitrary Wavefront EncodingAdvanced Optical ImagingDynamic MetamaterialsOptical System AnalysisDiffractive Optic
Metasurfaces are ultrathin, lightweight, multifunctional optical elements that have enabled wavefront shaping, holography, structured light, and polarization detection, and their superior spatial modulation has accelerated advances in optical imaging, with nanofabrication and algorithmic improvements promising further breakthroughs. This review examines forward and reverse design strategies for metasurfaces and their recent applications in imaging. The authors analyze how forward and reverse design approaches are employed to tailor metasurface wavefronts for imaging tasks. Metasurfaces’ arbitrary wavefront encoding facilitates diffraction‑limited imaging with aberration correction, polarization‑sensitive imaging, high‑resolution spectral imaging, 3D imaging, and algorithm‑assisted imaging.
Abstract Recently, metasurfaces have arisen as next‐generation optics with various merits, such as being ultrathin and lightweight with multi‐function integration. Numerous applications of metasurfaces have been demonstrated up to now, including wavefront shaping, optical imaging, hologram display, structured light generation, polarization detection, and so on. Among them, optical imaging components and techniques have been substantially promoted with the advent of metasurfaces due to their superior spatial modulation properties over electromagnetic waves. Here, the forward and reverse design approaches of metasurface and recent advances in various imaging applications based on them are reviewed. Due to the ability of arbitrary wavefront encoding, metasurfaces have been widely applied to numerous imaging applications, including diffraction‐limited imaging with aberration correction, polarization‐related imaging, high‐resolution spectral imaging, three‐dimentional (3D) imaging, and even algorithm‐assisted imaging, etc. Optical imaging applications combined with novel metasurfaces can make breakthroughs with the development of nanofabrication technologies and the improvement of computer algorithms.
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Dielectric gradient metasurface optical elements
Dianmin Lin, Pengyu Fan, Erez Hasman et al. · Science · 2014 · 2.3K citations