Results 31 to 40 of about 85,964 (311)

Near-Field Analysis of Terahertz Pulse Generation From Photo-Excited Charge Density Gradients [PDF]

open access: yes, 2015
Excitation of photo-current transients at semiconductor surfaces by subpicosecond optical pulses gives rise to emission of electromagnetic pulses of terahertz (THz) frequency radiation.
Natrella, M   +12 more
core   +1 more source

Compact Design for Bi-Polarization Quantum Routers on SOI Platform

open access: yesPhotonics, 2023
An ultra-compact optical quantum router (QR) consisting of a Mach–Zehnder interferometer (MZI) and waveguide tapers is proposed and numerically simulated, using silicon-on-insulator (SOI).
Zijie Dai   +5 more
doaj   +1 more source

A True Optoelectronic Spectrum Analyzer for Millimeter Waves With Hz Resolution

open access: yesIEEE Access, 2021
We present an architecture for millimeter-wave spectrum analyzers with Hz resolution and precision based on heterodyne down-conversion using ErAs:InGaAs photoconductive mixers driven by a tunable ultra-narrow linewidth continuous-wave (CW) photonic local
Anuar De Jesus Fernandez Olvera   +2 more
doaj   +1 more source

Carrier lifetime modulation on current capability of SiC PiN diodes in a pulsed system

open access: yesDiscover Nano, 2023
Silicon carbide (SiC) PiN diode has shown substantial promise as the freewheel diode for switch protection in a pulsed system. In this paper, we investigate the carrier lifetime (τ) modulation on pulsed current capability of SiC PiN diodes.
Xingliang Xu   +6 more
doaj   +1 more source

Progresses towards the application of terahertz technologies

open access: yesDianzi Jishu Yingyong, 2019
Science and technologies based on terahertz radiation have developed rapidly over the recent decades, which inspires the application attempts and research of terahertz technologies in several fields.
Wu Shuai, Qu Hao, Tu Hao, Feng Hui
doaj   +1 more source

A Terahertz Molecular Switch [PDF]

open access: yesPhysical Review Letters, 2003
4 pages, 5 figures. To appear in Phys.
Orellana P, Claro Huneeus, Francisco
openaire   +8 more sources

Investigations on Practical Issues in Solid Immersion Lens Based Sub-Wavelength Terahertz Imaging Technique: System Stability Verification and Interference Pattern Removal

open access: yesSensors, 2021
Terahertz (THz) imaging techniques are attractive for a wide range of applications, such as non-destructive testing, biological sensing, and security imaging.
Da-Hye Choi   +3 more
doaj   +1 more source

Modelling of reconfigurable terahertz integrated architecture (RETINA) SIW structures [PDF]

open access: yes, 2010
23.04.13 KB. Published version ok to add to spiral. PIER emailThis paper discusses for the first time the combined optoelectronic-electromagnetic modelling of a new technology that represents a paradigm shift in the way millimetre-wave and terahertz ...
Stepan Lucyszyn   +3 more
core   +1 more source

Terahertz Pulse Shaping using Microwave-Photonic Delay Line Filters

open access: yes, 2021
We propose an all-optical multi-band raised-cosine filter with tunable bandwidth for multi-channel IEEE 802.15.3d Standard-compliant terahertz communications using only a single-tap microwave photonic filter.Mohamed Shehata, Ke Wang, Withawat ...
Ke Wang   +5 more
core   +1 more source

Fast Terahertz Computed-Tomography Imaging With a Quantum-Cascade Laser and a Scanning Mirror [PDF]

open access: yes, 2013
A terahertz transmission imaging system based on a quantum-cascade laser (QCL), a fast scanning mirror, and a sensitive Ge:Ga detector is demonstrated. In order to reduce artifacts, special care was taken on the optics and the conversion of the measured
H.-W. Hubers   +11 more
core   +1 more source

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