Results 81 to 90 of about 452,793 (301)
Terahertz Rectifyier for Integrated Image Detector
Procedia Engineering, 2015 AbstractWe present a new CMOS compatible direct conversion terahertz detector operating at room temperature. The rectenna consists in a truncated conical helix extruded from a planar spiral and connected to a nanometric metallic whisker at one of its edges. The whisker reaches the semiconductor substrate that constitutes the antenna ground plane.
VARLAMAVA, VOLHA +5 more
openaire +1 more source
Controlling Radiative Phonons in the van der Waals Ferroelectric NbOI2
Advanced Materials, EarlyView.Using a simple mirror geometry, this work demonstrates local‐density‐of‐optical‐states control of THz phonon emission in van der Waals ferroelectric NbOI2. By engineering the photonic environment, the phonon Q‐factor, linewidth, peak frequency, and emission intensity are reversibly tuned by over an order of magnitude, revealing radiative phonons as ...
Baolong Zhang +5 more
wiley +1 more source
Advances in Condensed Matter Physics, 2017 By using optical heterodyne technique, we demonstrated the stable emission of sub-terahertz wave with the frequency ranging from 88 GHz to 101 GHz, which can operate as microwave source for nonlinear response measurement system.
Shuqing Chen +8 more
doaj +1 more source
Improvement of an InfraRed Pyroelectric Detector Performances in THz Range Using the Terajet Effect
Applied Sciences, 2021 An infrared (IR) pyroelectric detector was investigated for terahertz (THz) detection using the principle of the terajet effect, which focuses the beam beyond the diffraction limit.
Oleg V. Minin +3 more
doaj +1 more source
Mitigating the Nonlinearity of Radio-over-Fiber Terahertz Systems
, 2022 We experimentally demonstrate a highly-precise equalization technique based on a Volterra nonlinear filter for highly nonlinear terahertz communications systems.
Shehata, M. +2 more
core +1 more source
Above Room Temperature Ferroelectricity in Epitaxially Strained KTaO3
Advanced Materials, EarlyView.Through precise epitaxial engineering, the cubic and paraelectric KTaO3${\rm KTaO}_3$ is transformed into a robust ferroelectric. By leveraging lattice‐mismatched substrates to apply controlled epitaxial strain, a stable ferroelectric ground‐state is achieved with a transition temperature as high as 475 K, establishing KTaO3${\rm KTaO}_3$ as a highly ...
Tobias Schwaigert +11 more
wiley +1 more source
, 2022 We present a terahertz single-pole double-throw (SPDT) switch based on an integrated disk resonator for a substrateless dielectric platform made of an all-silicon-based effective medium. The switch operates based on photoexcitation by using visible light
Fumeaux, C. +2 more
core +1 more source
Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications
Advanced Materials Technologies, EarlyView.Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja +9 more
wiley +1 more source
Designing and manufacturing aspherical polystyrene lenses for the terahertz region
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2018 We report on the development of lenses for terahertz vision systems from their design up to manufacturing. Fused deposition modeling was used for assisting the 3D printing manufacturing process.
A. Shevchik-Shekera +3 more
doaj +1 more source
A compact, continuous-wave terahertz source based on a quantum-cascade laser and a miniature cryocooler [PDF]
, 2010 We report on the development of a compact, easy-to-use terahertz radiation source, which combines a quantum cascade laser (QCL) operating at 3.1 THz with a compact, low input-power Stirling cooler.
Semenov, Alexey +10 more
core +1 more source