Results 21 to 30 of about 176,774 (326)
Ultrafast terahertz magnetometry [PDF]
Nature Communications, 2020 AbstractA material’s magnetic state and its dynamics are of great fundamental research interest and are also at the core of a wide plethora of modern technologies. However, reliable access to magnetization dynamics in materials and devices on the technologically relevant ultrafast timescale, and under realistic device-operation conditions, remains a ...
Wentao Zhang +10 more
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Transient terahertz spectroscopy of excitons and unbound carriers in quasi two-dimensional electron-hole gases [PDF]
, 2009 We report a comprehensive experimental study and detailed model analysis of the terahertz dielectric response and density kinetics of excitons and unbound electron-hole pairs in GaAs quantum wells.
A. Sommerfeld +8 more
core +1 more source
PhotoniX, 2023 Chiral enantiomers have different pharmacological and pharmacokinetic characteristics. It is important to strictly detect chiral component for avoiding being harmful to the human body due to side effects.
Jiaming Lyu +4 more
doaj +1 more source
Waveguide mode imaging and dispersion analysis with terahertz near-field microscopy [PDF]
, 2009 Propagation of terahertz waves in hollow metallic waveguides depends on the waveguide mode. Near-field scanning probe terahertz microscopy is applied to identify the mode structure and composition in dielectric-lined hollow metallic waveguides.
Bowden, B. +4 more
core +1 more source
Subsurface Sub-terahertz and Terahertz Tomography
PIERS Online, 2010 Development of millimeter and sub-millimeter wavelengths technologies is one of the most promising research areas, especially for applications in so called terahertz imaging. In the paper we consider a tomography approach for obtaining 3-D imaging in frequency range from 100 GHz up to 325 GHz.
Vertiy, A. A., Cetinkaya, H., Tekbas, M.
openaire +2 more sources
Electrical and radiation characteristics of semilarge photoconductive terahertz emitters [PDF]
, 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
Lipids monitoring in Scenedesmus obliquus based on terahertz technology
Biotechnology for Biofuels, 2020 Background Microalgae are considered as a source of low pollution and renewable fuel due to their ability to synthesize an abundance of lipids.
Yongni Shao +6 more
doaj +1 more source
Advanced Photonics 2013, 2013 We present an easily fabricated waveguide prism for the terahertz (THz) frequency range. The prism is made of polypropylene and uses waveguide dispersion to spatially separate frequencies over the range of 0.1 to 0.7 THz. The diffraction properties of the prism were determined using electromagnetic field simulations and the waveguide parameters were ...
Claudia, Goy +4 more
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Spatial Terahertz Modulator [PDF]
Scientific Reports, 2013 Terahertz (THz) technology is a developing and promising candidate for biological imaging, security inspection and communications, due to the low photon energy, the high transparency and the broad band properties of the THz radiation1,2,3. However, a major encountered bottleneck is lack of efficient devices to manipulate the THz wave, especially to ...
Xie, Zhenwei +6 more
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Carrier lifetime modulation on current capability of SiC PiN diodes in a pulsed system
Discover 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