Results 51 to 60 of about 246,481 (370)

CMOS Terahertz Metamaterial Based 64 × 64 Bolometric Detector Arrays [PDF]

open access: yes, 2017
We present two terahertz detectors composed of microbolometer sensors (vanadium oxide and silicon pn diode) and metamaterial absorbers monolithically integrated into a complementary metal oxide semiconductor (CMOS) process.
Cumming, David R.S.   +3 more
core   +1 more source

Bessel Terahertz Pulses from Superluminal Laser Plasma Filaments

open access: yesUltrafast Science, 2022
Terahertz radiation with a Bessel beam profile is demonstrated experimentally from a two-color laser filament in air, which is induced by tailored femtosecond laser pulses with an axicon.
Zhelin Zhang   +8 more
semanticscholar   +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

Electrical and radiation characteristics of semilarge photoconductive terahertz emitters [PDF]

open access: yes, 2004
We present experimental characterization of semilarge photoconductive emitters, including their electrical/photoconductive parameters and terahertz spectra. A range of emitters were studied and fabricated on both LT-GaAs and SI-GaAs, having a variety
Fletcher, J.R.   +4 more
core   +1 more source

Investigation on the origin of terahertz waves generated by dc-biased multimode semiconductor lasers at room temperature [PDF]

open access: yes, 2008
A technique to measure a terahertz wave generated by spectrum tailored Fabry–Pérot lasers (FP) is assessed. A dc-biased and 25 °C temperature controlled FP is probed by a continuous wave signal, tuned at 20 nm away from its lasing modes.
D’Ottavi A.   +4 more
core   +1 more source

Coherent two-dimensional terahertz-terahertz-Raman spectroscopy [PDF]

open access: yesProceedings of the National Academy of Sciences, 2016
Significance The thermally populated motions of liquids, including hydrogen bonds, low-energy bending vibrations, conformational torsions, and hindered rotations, are resonant in the terahertz region of the spectrum. These motions regulate solvation, macromolecular structure, and vibrational energy flow in liquid-phase chemistry.
Finneran, Ian A.   +4 more
openaire   +4 more sources

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

Nonlinear two-dimensional terahertz photon echo and rotational spectroscopy in the gas phase [PDF]

open access: yes, 2016
Ultrafast two-dimensional spectroscopy utilizes correlated multiple light-matter interactions for retrieving dynamic features that may otherwise be hidden under the linear spectrum.
Fleischer, Sharly   +5 more
core   +2 more sources

Micromachining integration platform for sub-terahertz and terahertz systems [PDF]

open access: yesInternational Journal of Microwave and Wireless Technologies, 2018
AbstractWe demonstrate a sub-terahertz (THz) and THz integration platform based on micromachined waveguides on silicon. The demonstrated components in the frequency range 225–325 GHz include waveguides, filters, waveguide vias, and low-loss transitions between the waveguide and the monolithic integrated circuits.
Lamminen, Antti   +6 more
openaire   +4 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

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