Results 41 to 50 of about 6,307 (338)

Time-resolved electronic capture in germanium doped with hydrogen-like impurity centers [PDF]

open access: yes, 2012
The capture of free holes and electrons in germanium (Ge) doped by gallium (Ga) or antimony (Sb) has been studied by a time-resolved pump-probe experiment with the free-electron laser FELBE at the Helmholtz-Zentrum Dresden-Rossendorf.
Pavlov, S.G.   +13 more
core   +1 more source

Die Reaktionsrate eines InGaAs Terahertz Detektors in Fliegeform bei Zimmertemperatur mit gebrochener Symmetrie [PDF]

open access: yes, 2022
S.549-550A bow-tie InGaAs with broken symmetry has been designed for terahertz detection at room temperature. An active part of the detector consists of a two-dimensional electron gas which is heated non-uniformly with incident radiation.
Seliuta, D.   +8 more
core   +1 more source

Real-time terahertz imaging with a single-pixel detector

open access: yesNature Communications, 2020
Terahertz imaging is promising in many applications, but still relies on complex equipment. Here, the authors develop a simplified solution that enables terahertz real-time imaging using a single-pixel detector and rapid reconstruction methods.
Rayko Ivanov Stantchev   +3 more
doaj   +1 more source

A Hard Example Mining Approach for Concealed Multi-Object Detection of Active Terahertz Image

open access: yesApplied Sciences, 2021
Concealed objects detection in terahertz imaging is an urgent need for public security and counter-terrorism. So far, there is no public terahertz imaging dataset for the evaluation of objects detection algorithms.
Ling Li   +3 more
doaj   +1 more source

First absolute power measurement of a terahertz time domain spectroscopy system based on InGaAs/InAlAs photoconductors [PDF]

open access: yes, 2022
S.811-812We present the first absolute power measurement of a photoconductive terahertz (THz) emitter developed for time domain spectroscopy. The broadband THz radiation is generated by a high mobility InGaAs/InAlAs multilayer heterostructure ...
Bohmeyer, W.   +5 more
core   +1 more source

Resonant Polysilicon Antenna for Terahertz Detection

open access: yesIEEE Photonics Journal, 2019
Resonant antennas have garnered considerable interest in terahertz and visible regimes owing to its extraordinary localized field concentration capability.
Ze Shen   +5 more
doaj   +1 more source

Terahertz single photon detectors [PDF]

open access: yesSCIENTIA SINICA Physica, Mechanica & Astronomica, 2021
Terahertz detection plays an increasingly important role in various fields, such as astronomy, national defense, security checking, and biotechnology. With the development of technology, the sensitivity of terahertz detectors is continuously improving, and the detection of terahertz single photons has been demonstrated in recent years. In the terahertz
LiLi SHI   +5 more
openaire   +1 more source

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

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

Probing and modelling the localized self-mixing in a GaN/AlGaN field-effect terahertz detector [PDF]

open access: yes, 2012
In our previous work [Sun et al., Appl. Phys. Lett. 100, 013506 (2012)], we inferred the existence of localized self-mixing in an antenna-coupled field-effect terahertz detector.
H. Qin (秦华)   +14 more
core   +1 more source

Highly efficient Terahertz photoconductive switch at 1060nm excitation wavelength [PDF]

open access: yes, 2022
2 S.Broadband and sensitive Terahertz (THz) emitter and detector material is required to build cost-effective and mobile THz time-domain spectrometer systems (TDS).
Brahm, A.   +6 more
core   +1 more source

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