Results 31 to 40 of about 4,872 (295)

Continuous Wave Terahertz Generation from Photodiode-Based Emitters with up to 200 m W Terahertz Power

open access: yes, 2022
S.769-770The output characteristics of an optoelectronic terahertz (THz) transmitter based on a high-speed, waveguide-integrated photodiode is demonstrated. THz power measurements are performed with a calibrated pyroelectric detector.
Breuer, S.   +5 more
core   +1 more source

A Scientometric Analysis of Global Terahertz Research by Web of Science Data

open access: yesIEEE Access, 2020
Terahertz is a high-tech technology that has been developed rapidly in recent years. Relevant research has been extensively carried out in physics, chemistry, communication, biology, agricultural food safety testing, industrial non-destructive testing ...
Bin Li, Kai Hu, Yin Shen
doaj   +1 more source

Experimental Comparison of UTC- and PIN-Photodiodes for Continuous-Wave Terahertz Generation

open access: yes, 2022
S.343-354We carried out an experimental comparison study of the two most established optoelectronic emitters for continuous-wave (cw) terahertz generation: a uni-traveling-carrier photodiode (UTC-PD) and a pin-photodiode (PIN-PD).
Deninger, A.   +6 more
core   +1 more source

Improved SSD network for fast concealed object detection and recognition in passive terahertz security images

open access: yesScientific Reports, 2022
With the strengthening of global anti-terrorist measures, it is increasingly important to conduct security checks in public places to detect concealed objects carried by the human body. Research in recent years has shown that deep learning is helpful for
Lu Cheng   +4 more
doaj   +1 more source

Ultrafast terahertz detectors

open access: yesActa Physica Sinica, 2018
Terahertz (THz) technologies have broad application prospects in ultrafast space communication, heterodyne detection, biological detection, non-destructive testing and national security. Ultrafast THz detectors, which can respond to the THz light with modulation rate larger than 1 GHz, are the key component of fast imaging, space communication ...
null Zhang Zhen-Zhen   +2 more
openaire   +1 more source

MILLIMETER AND TERAHERTZ RADIATION DETECTOR

open access: yesVestnik SSUGT (Siberian State University of Geosystems and Technologies), 2021
The aim of this work is an analytical review of terahertz and millimeter-wave radiation receivers. Classification of terahertz radiation receivers and their comparative characteristics are made. Various aspects of the application of terahertz radiation, as well as the main types and types of receivers of this radiation, are considered in this paper ...
Igor V. Minin, Oleg V. Minin
openaire   +1 more source

Compact and ultra-efficient broadband plasmonic terahertz field detector

open access: yesNature Communications, 2019
Most efficient terahertz detection schemes rely on complex free space optics and require high-power lasers. Here, the authors report an integrated plasmonic terahertz detector on a silicon photonics platform, with 2.5 THz bandwidth and a 65 dB dynamical ...
Yannick Salamin   +7 more
doaj   +1 more source

Rapid sensing of hidden objects and defects using a single-pixel diffractive terahertz sensor

open access: yesNature Communications, 2023
Terahertz waves offer advantages for nondestructive detection of hidden objects/defects in materials, as they can penetrate most optically-opaque materials.
Jingxi Li   +8 more
doaj   +1 more source

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

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

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

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

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