Results 81 to 90 of about 12,412 (307)
Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
Design and simulation of a temperature-tunable terahertz metamaterials based on VO2 particles
Results in Physics, 2019 A temperature-sensitive metamaterial containing vanadium dioxide (VO2) particles is designed and simulated in the terahertz band. A near-perfect absorption peak is achieved by optimizing structural parameters at room temperature.
Guoping Lei +4 more
doaj +1 more source
Spacer‐Less Substrate‐Integrated Metasurface for Near‐Unity Terahertz Absorption
Advanced Optical Materials, EarlyView.ABSTRACT Although conventional metal‐insulator‐metal (MIM) terahertz (THz) absorbers can provide near‐unity absorption, their multilayer stacks inevitably introduce additional thickness, mass, and residual stress, which limit their compatibility with THz thermal sensing platforms.
Zihao Zhao +6 more
wiley +1 more source
Terahertz photonic crystal quantum cascade lasers [PDF]
We combine photonic crystal and quantum cascade band engineering to create an in-plane laser at terahertz frequency. We demonstrate that such photonic crystal lasers strongly improve the performances of terahertz quantum cascade material in terms of ...
Faist, Jerome +4 more
core +1 more source
Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths [PDF]
, 2003 Variable polarization compensation has been demonstrated at 100 GHz. The device consists of two interlocking V-groove artificial dielectric gratings that produce a birefringence that varies with the separation distance. A maximum retardance of 74/spl deg/
Blaikie, R.J. +7 more
core +1 more source
Color Center Formation in Silicon‐On‐Insulator for On‐Chip Photonic Integration
Advanced Optical Materials, EarlyView.ABSTRACT Color centers in silicon have great potential as single photon sources for quantum technologies. Some of them – like the T center – also possess optically‐active spins that enable spin‐photon interfaces for generating entangled photons and multi‐spin registers. This paper explores the generation of several types of color centers in silicon for
Arnulf J. Snedker‐Nielsen +15 more
wiley +1 more source
Advanced Science, EarlyView.In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Yang Wu +5 more
wiley +1 more source
Metamaterial bait unit for terahertz band
, 2016 With the development of the terahertz technology, the ability of terahertz radar becomes stronger and stronger, which leads to the failure of traditional smoke screen or dispersion as a countermeasure to effectively fight against terahertz spectrum ...
Guo, Xiao Dang +4 more
core +1 more source
Large-area photonic circuits for terahertz detection and beam profiling
Light: Science & ApplicationsDeployment of terahertz communication and spectroscopy systems relies on the availability of low-noise and fast detectors, with plug-and-play capabilities. However, most current technologies are stand-alone, discrete components.
Alessandro Tomasino +3 more
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Terahertz-ViSAR-based Imaging of Passive Jamming Objects
Leida xuebaoImaging of passive jamming objects has been a hot topic in radar imaging and countermeasures research, which directly affects the detection and recognition capabilities of radar targets.
Lei FAN, Qi YANG, Hongqiang WANG, Jun YI
doaj +1 more source