Broadband metasurface
Generally, our design principle can be used to realize various flat optical components without chromatic effect like the broadband achromatic gradient metasurface (BAGMS). The design of a BAGMS to deflect a normally incident light by the same angle in a broad wavelength range is demonstrated (Fig. 5a). The … See more As the most basic and important functional element, converging lens plays a crucial role in various optical systems. The typical distribution of phase retardation for a metalens follows: where \(R{\rm{ = }}\sqrt {x_0^2{\rm{ + … See more In our design, the basic building blocks of the BAML are metallic nano-rods (MNRs) and their assemblies, coupled MNRs. The metal-dielectric-metal structural configuration (insets … See more Employing the proposed policy, a broadband achromatic converging metalens with numerical aperture (NA) = 0.268 is designed and demonstrated. Figure 3a shows the … See more
Broadband metasurface
Did you know?
WebJun 1, 2015 · 779 wileyonlinelibrary.com C O M M U N IC A IO N In this article, we introduce a metasurface-based broadband fl at-lens array functioning in the terahertz regime. Being functional devices consisted of a number of regularly arranged lenslets, lens arrays not only possess superior focusing and imaging functionalities but also have many intriguing … WebApr 25, 2024 · A systematic study of a robust angular tolerance ultra-broadband metasurface for arbitrary rotation of linear polarization is demonstrated. The proposed …
WebA broadband active metasurface is designed around quantum-cascade (QC) gain material for use in a broadband tunable QC vertical external-cavity surface-emitting laser … WebSep 2, 2024 · Broadband electromagnetic properties and functionalities are under active investigation, with many important but unexplored topics remaining. Specifically, efforts …
WebApr 5, 2024 · In this paper, a new fractal-based broadband metasurface absorber is developed, which is based on the excellent space-filling ability of the Hilbert fractal. Each … WebJun 1, 2024 · Abstract. We report on an ultra-broadband metasurface perfect absorber in the visible and NIR region based on the triple Mie resonances generated from the three …
WebPropose a multi-functional metasurface broadband absorber. • Separately tunable absorption window and intensity via control of external voltage. • Two graphene layers are separately tuned to the absorption window and intensity. • Combine current and electric field distributions to analyze modulation mechanism. •
WebJan 8, 2024 · By precisely designing the parameters of each unit, a metasurface composed of eight detuned units is finally obtained with a superior broadband absorption spectrum. … brexit and veterinary workforce pressuresWebApr 11, 2024 · Broadband metasurface systems that utilize microscale displacements between two metasurfaces to enable reconfigurable polarization responses within a … brexit and vacationsWebThe development of patterned graphene metasurface absorbers (PGMAs) brings solution avenues to achieve light weight, thin thickness, wide absorption bandwidth, and tunable … brexit and scienceWebMar 4, 2024 · In this work, an acoustic metasurface with ultra-broadband absorption characteristics and exceptionally low thickness is proposed and tested. The fundamental unit of the proposed metasurface is a resonator with a pie-sliced cavity and an inserted neck. The perfect and tunable low-frequency absorption characteristics of the proposed … county name for zip code 99654WebDec 8, 2024 · An elastic metasurface with a gradient index of functional units, namely gradient folding metasurface (GFMS), is proposed to simultaneously manipulate the transmission phase and amplitude of flexural waves. By varying the gradient index common ratio (CR) between each adjacent unit, the GFMS was found to cover an entire 2π span … county name of 12534WebSep 18, 2024 · An important consideration when designing metasystems is the strong chromatic dispersion of metasurface elements. While chromatic dispersion can be a feature in certain instruments, in imaging systems, it leads to chromatic aberrations, hindering broadband operation. brexit and the uk auto industryWebAug 8, 2024 · We demonstrate a broadband infrared absorber using an asymmetric Fabry–Perot cavity consisting of a monolithically fabricated two-layer metasurface. … county names in ireland