WebThe metalens has focusing efficiencies higher than 72% and exhibits nearly diffraction-limited focusing at long-wavelength infrared frequency. In addition, it is easy to realize … Webplanar lens18, 28-47 (metalens). Due to their planar configuration, metalenses have potential applications in several multidisciplinary areas including imaging, spectroscopy, lithography, and laser fabrication. High numerical aperture (NA) and high efficiency metalenses have been demonstrated in both near infrared39 and visible40, 43. It has ...
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WebUltrathin and high-efficiency Pancharatnam–Berry phase metalens for millimeter waves ... examples of PBM working at the microwave or terahertz Therefore, bi-layer PBM structures stand out as the preferred (THz) range for functionalities such as beam steering13, candidates for leveraging the fabrication constraints. ... numerical aperture of ... WebThe numerical aperture (NA) of a lens determines its focusing resolution capability and the maximum light collection or emission angle. In this Letter, an ultrathin high NA metalens … greenbank hotel falmouth offers
Large Numerical Aperture Metalens with High Modulation …
WebMar 14, 2024 · The numerical aperture (NA) of a lens determines its ability to focus light and its resolving capability. ... A Metalens with a Near-Unity Numerical Aperture Nano Lett. 2024 Mar 14;18(3) :2124 ... In contrast, metasurfaces allow the lens designer to circumvent those issues producing high-NA lenses in an ultraflat fashion. However, so far, these ... WebMar 23, 2024 · A metalens is a two-dimensional (2D) metasurface (1−3)that controls the amplitude, polarization, and phase of the impinging light using engineered sub-wavelength resonators, also known as meta-atoms (MA), judicially arranged in periodic or … WebIn the design method of the present embodiment, by forming the meta-grating unit of high numerical aperture meta-lens to carry out parameter design, precise arrangement, so that high numerical aperture meta-lens can realize high focusing efficiency, high spot quality Focusing, and help the area of the high numerical aperture metalens can be increased to … flowers for delivery pittsburg ca