Results 71 to 80 of about 1,794 (207)
Non‐Uniform Programmable Photonic Waveguide Meshes
Laser &Photonics Reviews, EarlyView.Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley +1 more source
Remote SensingTerahertz waves are located in the “transition zone” between millimeter waves and infrared light. Terahertz video synthetic aperture radar (THz-ViSAR) utilizes the high operating frequency, strong radar cross-section intensity, and high azimuth ...
Xiaofan Li +4 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.An optical approach is proposed for real‐time and high‐precision detection of the magnetostrictive deformation of an yttrium‐iron‐garnet sphere in three dimensions, based on the deformation induced spatial high‐order modes of the scattered field, postselection, and balanced homodyne detection.
Xiaomin Liu +5 more
wiley +1 more source
Compact Ultra-Broadband Terahertz Radar-Based 3D Imaging System
99102We report on the integration of a photonic frequency-modulated continuous-wave (FMCW) terahertz radar with optomechanical components to build a mobile 3D imaging system.
Keil, Andreas +4 more
core +1 more source
Hand-Guided Mobile Terahertz 3D Imaging Platform with Aspherical Telecentric f-θ Optics
, 2022 377380We present a hand-guided mobile terahertz imaging platform for non-destructive testing (NDT). The scanner acquires volumetric 3D image data using an integrated FMCW radar module in combination with a line scanning optics and a position encoder ...
Keil, Andreas +6 more
core +1 more source
Sensors, 2020 Millimeter-wave and terahertz frequencies offer unique characteristics to simultaneously obtain good spatial resolution and penetrability. In this paper, a robust near-field monostatic focusing technique is presented and successfully applied for the ...
Jose Antonio Solano-Perez +6 more
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Laser &Photonics Reviews, EarlyView.This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn +4 more
wiley +1 more source
Terahertz Inspection of the Joining Quality of Industrial Silicon Carbide Ceramics
, 2022 S.879-880We present in our contribution first investigations towards quality inspection of joining interfaces of silicon carbide (SiC) and silicon nitride (SiN) ceramics for industrial applications.
Bauer, Maris +3 more
core +1 more source
Terahertz single/dual beam scanning with tunable field of view by cascaded metasurfaces
APL PhotonicsDynamic beam scanning with a dynamically tunable beam number, beam direction, and beam polarization remains a challenge in the terahertz gap, which is urgently needed for terahertz radar, next-generation wireless communication, and imaging applications ...
Haifeng Xu +5 more
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The Terahertz Scattering Analysis of Rough Metallic and Dielectric Targets
Leida xuebao, 2018 The terahertz scattering characteristics of metallic and dielectric rough targets is important for the investigation of the terahertz radar targets properties.
Mou Yuan +3 more
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