Terahertz metalens of hyper-dispersion

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August undefined, 2024

WebWe have demonstrated a hyper-dispersive metalens in the terahertz regime by simultaneously manipulating the phase, GD, and GDD. The proposed hyper-dispersive … WebThe dispersion of this hybrid component, characterized by using a Fourier plane imaging microscopy setup, is essentially achromatic over about 150 nm in the visible. Broadband focusing with composite plano-convex metasurface lenses is also proposed. These devices could find applications in numerous consumer optics, augmented reality components ...

Graphene-based transmissive terahertz metalens with dynamic …

Web17 Sep 2013 · A terahertz stop band filter and a resonator consisting of metal gratings are analyzed using the finite-difference time-domain (FDTD) method, with special attention to … WebMetasurfaces are 2D metamaterials composed of subwavelength nanoantennas according to specific design. They have been utilized to precisely manipulate various parameters of light fields, such as phase, polarization, amplitude, etc., showing promising functionalities. people in bluetooth sig

Terahertz Metalens for Multifocusing Bidirectional …

Web21 Dec 2024 · In recent years, metasurface-based focusing elements have gradually become an indispensable type of terahertz lenses. However, the meta-lens often suffers from chromatic aberration due to the intrinsic dispersion of each element, especially in the broadband application scenarios. In this paper, we design and demonstrate a silicon … Web27 Oct 2024 · In this paper, we report a transmissive terahertz (THz) metalens based on a dielectric metasurface that consists of periodically arranged sub-wavelength silicon cross … Web26 Nov 2024 · the development of achromatic meta-devices in terahertz hyper-spectral imaging and can be used to investigate the robustness of metasurface functional designs. 2. Theoretical realizations of broadband achromatic metalens As shown in the schematic in Fig. 1a, the proposed terahertz achromatic metalens is composed of silicon pillars … people in body bags

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Optical metalenses: fundamentals, dispersion …

Web30 Oct 2024 · Terahertz near-field microscopy is used to detect the phase of the electric field component transmitted by the metalens, which coincides with the phase of the … Web24 Apr 2024 · The advantage of the method is that it provides color correction over a continuous wavelength range. However, the method is limited to small optical powers and/or wavelength ranges 20. Other ... people in blue storyWebBroadband Dielectric Metalens for Polarization Manipulating and Superoscillation Focusing of Visible Light. ... Single-Layer Metasurfaces as Spectrally Tunable Terahertz Half- and Quarter-Waveplates. ACS Applied Materials & Interfaces 2024, 11 (8) ... Terahertz metalens of hyper-dispersion. Photonics Research 2024, 10 (4) , ... tofino banana-pear muffins

"WebAbstract. Metasurfaces are 2D metamaterials composed of subwavelength nanoantennas according to specific design. They have been utilized to precisely manipulate various … " - Terahertz metalens of hyper-dispersion

Terahertz metalens of hyper-dispersion

Crystals Free Full-Text Potential of Sub-THz-Wave Generation in ...

WebThe metalens is expected to be used in advanced THz camera, as a great candidate for tradi-tional CPL and focusing lens group, and also shows potential application in polarization imaging with discriminating LCP and RCP. Keywords: terahertz metalens; metamaterials; metasurfaces; dynamic phase; single-handed circular polarization; Web28 Oct 2024 · According to the grating equation, the metalens deflects different incident wavelengths by different angles. Some scholars have focused on enhancing the dispersion of diffractive metalens. Such a hyper-dispersive metasurface had a larger zoom range than an ordinary metalens and was used to increase the imaging depth of fast spectral …

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WebThe broadband dielectric spin Hall meta-lens is achieved by integrating two geometric phase lenses with different functionalities into one single dynamic phase lens, which manifests … Web25 Mar 2024 · Here researchers from the group at Tianjin University reported the achromatic terahertz metalens with excellent performance covering the band from 0.6 to 1.0 THz. …

Web13 Oct 2024 · As \(\hbox {ZrO}_{2}\) ceramic has a high permittivity \(\varepsilon _{\mathrm{r}} = 32.5\) and a low loss factor of 0.05 in terahertz band 20,21, it is suitable … Webaberration should be eliminated. On the other hand, increasing dispersion (hyper-dispersion) can enable higher resolution of spectrometer devices3 and transmission ... broadband28-33 in different wavelength bands with a single-layer metalens can be realized through dispersive phase compensation. However, the current achromatic

Web18 May 2024 · The large chromatic dispersion of the metalens made the focal length tunable and by simply switching the incident wavelength they could realize non-motion optical zooming-in and DOF scanning (Fig. 16c–e). They further imaged a biological … Web16 Feb 2024 · The problems considered in this work are: 1) metalens integrated with single-handed CP wave conversion have practical application value in terahertz (THz) cameras, and how metalens converts LP THz ...

Web21 Apr 2016 · The shared-aperture phased antenna array developed in the field of radar applications is a promising approach for increased functionality in photonics. The alliance between the shared-aperture concepts and the geometric phase phenomenon arising from spin-orbit interaction provides a route to implement photonic spin-control multifunctional ...

Web5 Mar 2024 · Terahertz (THz) waves, with frequencies ranging from 0.1 to 10 THz and wavelengths from 0.03 to 3 mm, have potential applications in various domains, including … tofino bandWeb26 Nov 2024 · the development of achromatic meta-devices in terahertz hyper-spectral imaging and can be used to investigate the robustness of metasurface functional … tofino bakery bcWebAccording to the grating equation, the metalens deflects different incident wavelengths by different angles. Some scholars have focused on enhancing the dispersion of diffractive metalens. Such a hyper-dispersive metasurface had a larger zoom range than an ordinary metalens and was used to increase the imaging depth of fast spectral tomography ... people in boatWebThe metalens is expected to be used in advanced THz camera, as a great candidate for tradi-tional CPL and focusing lens group, and also shows potential application in … people in boholWeb29 Oct 2024 · The tunable graphene metalens is shown in figure 1(a), which is composed of three layers: metallic grating, dielectric spacer, and graphene microstructure.Graphene is patterned into an array of rectangular patches in the x-y plane.Figure 1(b) is a constitutive metaatom with the graphene patch orientated at with respect to the x-axis.Due to such … people in boliviaWeb5 Mar 2024 · Terahertz (THz) waves, with frequencies ranging from 0.1 to 10 THz and wavelengths from 0.03 to 3 mm, have potential applications in various domains, including communications, spectroscopy, imaging, security, and medical diagnostics [ 1, 2, 3 ]. tofino barberWebDesign of terahertz focusing lens based on high-resistivity silicon metasurface Ma Min 1,2,3 , , Jin Lin 2,3 , Qin Hua 2,3 , Sun Jiandong 2,3 , Chen Lixiang 1 , Sun Yunfei 1 , , 1. School of Electronic and Information Engineering, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, China 2. tofino barge