Terahertz near-field imaging
Web13 Dec 2024 · This paper presents a metamaterial-based super-oscillatory lens (SOL) fabricated by photolithography on a glass substrate and designed to operate at sub-terahertz (sub-THz) frequencies. The lens consists of repeating crisscross patterns of five-ring slits with sub-wavelength diameter. The lens is capable of generating multiple focal … WebDevelopment of active terahertz modulators for use with quantum cascade lasers and near-field imaging of their individual resonators Author: ... metasurface devices were …
Terahertz near-field imaging
Did you know?
Web2. Terahertz Near-Field Microscopy A. Experimental Setup The schematic setup of our near-field imaging sys-tem is shown in Fig. 1(a). It is based on the coherent Web3 Jun 2024 · We report theoretical investigations performed in the terahertz G-band, in the 228–232 GHz spectral window for a piezoelectrically-responsive ring-cone element metasurface composed of polyvinylidene fluoride (PVDF)/Silicon and PVDF/Silica glass. The choosing of this spectral window is motivated by a multitude of applications in terahertz …
WebDevelopment of active terahertz modulators for use with quantum cascade lasers and near-field imaging of their individual resonators Author: ... metasurface devices were investigated with room temperature aperture and scattering scanning near-field optical microscopes (SNOM), which can provide subwavelength resolution. Furthermore, they showed ... Web16 Dec 2024 · s-SNOM can be used to probe the local dielectric function of a sample. Hence, the THz range is very well suited to investigate phenomena related to mobile charge …
Web7 May 2024 · Terahertz (THz) near-field microscopy retains the advantages of THz radiation and realizes sub-wavelength imaging, which enables applications in fundamental … Web17 Dec 2024 · Abstract and Figures. We demonstrate terahertz (THz) wave near-field imaging with a spatial resolution of ∼4.5 μm using single-pixel compressive sensing enabled by femtosecond-laser (f s-laser ...
WebA uniform illumination over a screen is crucial for terahertz imaging. As such, conversion from a Gaussian beam to a flattop beam becomes necessary. Most of the current beam conversion techniques rely on bulky multi-lens systems for collimated input and operate in the far-field. We present a single metasurface lens to efficiently convert a quasi-Gaussian …
Web1 Jan 2013 · We demonstrate terahertz (THz) near-field imaging using resonantly enhanced transmission of THz-wave radiation (lambda˜ 200 mum) through a bull's eye structure (a single subwavelength aperture ... small windows fanhikrua brothers beybladeWeb8 Feb 2024 · While terahertz near-field subsurface imaging has not been widely considered, and only apertureless-type near-field imaging has demonstrated precision nondestructive … hikserviceWebAn integrated optical delay line allows for sampling of the scattered THz field as a function of time, which delivers near-field THz spectroscopy upon the Fourier transformation or … hiks products ltdWeb20 Jan 2024 · In article number 2005814, Jiang Li, Huabin Wang, and co-workers demonstrate the imaging of single protein molecules with a scattering-type terahertz (THz) scanning near-field optical microscope, taking advantage of a graphene substrate with high THz reflectivity and atomic smoothness, and a long platinum probe with high scattering … hikscale-f6142WebAn Investigation of Terahertz Near-Field Imaging by Hungyen Lin B.E. (Computer Systems, First Class Honours), The University of Adelaide, Australia, 2003 M.Eng. (Manufacturing … hikrocchurchWeb11 Apr 2024 · In general, the aforementioned characteristics contribute to the high NA and efficient focusing performance of CVBAM in operating THz range, which has foreseeable potential to become a revolutionary platform in the applications of THz near-field imaging and spectroscopy. 4.2. The continuously varifocal performances of CVBAM small windows for outside sheds