High numerical aperture microwave metalens
WebOct 15, 2024 · The numerical aperture (NA) of the achromatic metalens is 0.384, and the average Strehl ratio at operating wavelengths is 0.56. For a transmission type metalens, high focusing efficiency is an important requirement towards practical application. 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 …
High numerical aperture microwave metalens
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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 ... WebNov 12, 2024 · Herein, an ultra-thin broadband microwave metalens (frequency range from 8.0GHz to 10.5GHz) with both high-efficiency above 40% and large NA more than 0.6 is …
Webbroadband microwave metalens (frequency range from 8.0 to 10.5 GHz) with a relatively high-efficiency above 40% and a large NA of more than 0.6 is presented. The metalens is … WebJan 6, 2024 · Herein, an ultra-thin broadband microwave metalens (frequency range from 8.0 to 10.5 GHz) with a relatively high-efficiency above 40% and a large NA of more than 0.6 is presented. The metalens is also fabricated and the measurement results agree with the simulations very well.
WebFigure 1B shows three typical cases with the focus offset being f·tanθ i, f·sinθ i, and f·θ i, respectively, assuming f = 15λ and the aperture equal to 2.5f.For the first case, the metalens projects an undistorted image on the image plane. This leads to perfect imaging regardless of resolution, but the corresponding phase profile is strongly dependent on the incident … WebShop Best Buy for microwaves. Whether you have a full kitchen or a countertop in a dorm room, we can help you find the best microwave for your cooking needs.
WebApr 24, 2024 · High-numerical aperture capability It has been claimed that high-NA diffractive lenses were demonstrated more than a decade ago, and therefore metalenses offer no advantage in this respect... tsw hockenheim alloy wheelsWebApr 26, 2024 · In this paper, we design a double-layer metalens to achieve achromatic imaging over a field of view (FOV) of 60° in the visible light range of 470 nm to 650 nm, and its performance is verified by numerical simulations. The numerical aperture (NA) of the metalens is 0.61 and the average focusing efficiency is > 50% at normal incidence. tsw holeshotWebJunjie Hu, et al. "High numerical aperture large field-of-view metalens imaging". 2024 SPIE. 3. Kangning Zhang, Junjie Hu, et al. "Deep compressed imaging via optimized pattern scanning" 2024 ... phobia of hearing people eatingWebNov 14, 2024 · Here, we demonstrate a polarization-insensitive, all-dielectric metalens operating at LWIR. The metalens has a numerical aperture of 0.6 at the wavelength λ = … tswhqWebUpgrade Your Kitchen With an Over-the-Range Microwave. Looking to upgrade your kitchen with a new over-the-range microwave? With the latest styles and brands plus how-to … tswhrWebLearn more about our low-latency, cost-effective wireless microwave backhaul solutions, tailored to your business's needs. tsw homeWebA circular aperture made of PEC (Perfect Electrical Conductor) is placed between the source and the metalens to limit the area of injection. The nearfiled results from the “field” monitor are shown below: The incident field is mostly blocked by the PEC (Perfect Electrical Conductor) aperture. phobia of heartbreak