High numerical aperture microwave metalens

Author: bldx

August undefined, 2024

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. 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 …

Broadband, large-numerical-aperture and high-efficiency …

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 … Webfar, a ﬁve-layer microwave metalens with high ef ﬁciency of about 80% but a small NA =0.5 is designed.9) Also, high NA above 0.9 microwave metalenses with a peak focusing ef ﬁ-ciency of around 50% is demonstrated by using a four-layer transmissive metasurface.10,11) However, the working band- small pork roast recipe oven

Large Numerical Aperture Metalens with High Modulation …

WebFeb 28, 2024 · The achromatic subdiffraction lens with large numerical aperture (NA) is of significant importance in optical imaging, photolithography, spectroscopy, and nanophotonics. However, most of the previous… PDF Broadband achromatic metalens for linearly polarized light from 450 to 800 nm. Mian Liu, Jianjun Cao, N. Xu, Ben-Xin Wang … WebDec 1, 2024 · High numerical aperture (NA) metalenses with large focusing efficiency are crucial for various applications in modern optics and photonics, particularly in high resolution imaging, high... WebNov 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 = … highlights liverpool vs everton

On-chip metalenses based on one-dimensional gradient trench in …

Metalens – Ansys Optics

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 … 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. small port bowtie vortec headsWebMeanwhile, an orthogonal linear polarization multiplexing metalens, as another kind of metalens, has also been developed [6,31,32]. For example, a polarization-multiplexed metalens with a large numerical aperture was designed, which can independently control x- and y-polarized light . Even though the two kinds of orthogonal polarization ... highlights login

"WebDec 1, 2024 · High numerical aperture and large focusing efficiency metalenses in the microwave spectrum are studied. Numerical and experimental results demonstrate a high … " - High numerical aperture microwave metalens

High numerical aperture microwave metalens

WebApr 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. 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.

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WebNov 12, 2024 · Abstract. The numerical aperture (NA) of a lens determines its focusing resolution capability and the maximum light collection or emission angle. In this Letter, an … WebDec 1, 2024 · High numerical aperture and large focusing efficiency metalenses in the microwave spectrum are studied. Numerical and experimental results demonstrate a high …

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WebBroadband, large-numerical-aperture and high-efficiency microwave metalens by using a double-layer transmissive metasurface R ecently, metalens has become a frontier and hot topic in the field of ... 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 ...

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WebMar 14, 2024 · Large Numerical Aperture Metalens with High Modulation Transfer Function. Jian Zhang, Xiong Dun*, Jingyuan Zhu, Zhanyi Zhang, Chao Feng, Zhanshan Wang, Wolfgang Heidrich, and Xinbin Cheng*，ACS Photonics，2024. 下一条： Anisotropic Excitons Reveal Local Spin Chain Directions in a van der Waals Antiferromagnet. small port mcWebOver-the-Range Microwave Oven with EasyClean®. Model# LMV1764ST Color Stainless Steel. Store Specials. In Stock. Rebates Available. Save $53 Was $296. $243. highlights look and findWebApr 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... highlights llcWebJan 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 … highlights lofotenWebOct 6, 2024 · By generating 1D phase arrangement at the nanoscale, a miniature on-chip metalens with µ ∼ 3 × 0.5 µ m dimension could achieve light focusing on a 2D waveguide surface with the flexibility to design scalable focal … highlights logo pngWebApr 10, 2024 · what: The authors propose a dielectric metalens for the diffraction of angular Bessel functional phase modulated vector field under the inspiration of the tightly autofocusing property of a radially polarized high-order Bessel beam. this kind of metalens with a numerical aperture (NA) of 0.9 the linearly polarized light is converted into a ... highlights londenWebAn ultra-thin high-efficiency plasmonic metalens with symmetric split ring transmitarray metasurfaces Yong-Qiang Liu, Wenqiang Chen, Xuemei Du, Yingchao Shu, Lujun Wu, Zhongru Ren, Hongcheng Yin, Jinhai Sun, Kainan Qi, Yongxing Che, Liangsheng Li; Affiliations ... highlights liverpool vs man united