Results 61 to 70 of about 555,390 (156)

Carrierless I-Q Mixing for Terahertz Communications

open access: yes, 2022
We experimentally demonstrate the transmission of a carrierless quadrature amplitude-modulated signals at a data rate up to 64 Gbit/s using a 253 GHz photonics-based terahertz communications system with optical intensity modulation, 10-km single mode ...
Shehata, M.   +2 more
core   +1 more source

Imaging the coupling of terahertz radiation to a high electron mobility transistor in the near-field [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
We used AlGaN/GaN high electron mobility transistors as room-temperature direct detectors of radiation at 0.15 THz from a free electron laser, hence 5 times higher than their cutoff frequency of 30 GHz.
Ortolani M.   +12 more
doaj   +1 more source

Improvement of the Electro-Optical Process in GaAs for Terahertz Single Pulse Detection by Using a Fiber-Coupling System

open access: yesApplied Sciences, 2021
The electro-optical process is a popular method for terahertz radiation detection. Detectors based on the electro-optical process have large bandwidth, and the signal-to-noise ratio (SNR) is relatively high.
Adnan Haj Yahya   +4 more
doaj   +1 more source

A Monolithic Visible, Infrared and Terahertz 2D Detector

open access: yes, 2010
A monolithic multispectral detector for imaging in the visible (VIS), infrared (IR) and terahertz (THz) ranges has been designed for operation at room temperature.
J. Meilhan   +9 more
core   +1 more source

Improvement of an InfraRed Pyroelectric Detector Performances in THz Range Using the Terajet Effect

open access: yesApplied 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

Effective Generation of Milliwatt-Level Sub-Terahertz Wave for Nonlinear Response Measurement of Two-Dimensional Material by Optical Heterodyne Technique

open access: yesAdvances 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

Design of 2D TeraHertz band-gap photonic waveguides using an accelerated integral equation technique [PDF]

open access: yes, 2009
This paper describes the application of the buffered block forward backward (BBFB) method to the problem of modeling 2D terahertz (THz) photonic band gap waveguides at the frequency of 3 THz.
D. Bogusevschi   +7 more
core   +2 more sources

Mitigating the Nonlinearity of Radio-over-Fiber Terahertz Systems

open access: yes, 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

Designing and manufacturing aspherical polystyrene lenses for the terahertz region

open access: yesSemiconductor 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

Terahertz Reflection-Mode Biological Imaging Based on InP HBT Source and Detector

open access: yes, 2017
This paper presents the development of an oscillator and a detector based on InP HBT technology operating near 300 GHz, and their application to terahertz reflection-mode imaging.
허용민, 손혜영, 오승재
core   +1 more source

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