Results 41 to 50 of about 56,977 (335)
Employment of gradient metal-film output mirrors in terahertz discharge lasers [PDF]
Радиофизика и электроника, 2021 Subject and Purpose. The problem of output beam matching with the waveguide transmission line often arises when using terahertz lasers. The special quasi-optical devices that are used to combat the problem lead to radiation losses and additional material
M.I. Dzyubenko +7 more
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Nonlinearities of graphene in microwave and terahertz ranges
S. B. Bodrov +5 more
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Terahertz electromagnetic fields (0.106 THz) do not induce manifest genomic damage in vitro. [PDF]
PLoS ONE, 2012 Terahertz electromagnetic fields are non-ionizing electromagnetic fields in the frequency range from 0.1 to 10 THz. Potential applications of these electromagnetic fields include the whole body scanners, which currently apply millimeter waves just below ...
Henning Hintzsche +5 more
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Time-Delay Multiplexing of Two Beams in a Terahertz Imaging Radar [PDF]
, 2010 We demonstrate a time-delay multiplexing technique that doubles the frame rate of a 660–690-GHz imaging radar with minimal additional instrument complexity.
Bryllert, Tomas +5 more
core +1 more source
TERAHERTZ CLYNOOROTRON WITH AN AZIMUTHAL COMB [PDF]
Радиофизика и электроника, 2017 The results of theoretical and experimental studies of oro-trons – oscillators of diffraction radiation with spatially developed electrodynamic systems, electromagnetic oscillations in which are excited, as a rule, by nonrelativistic spatially developed ...
V. D. Yeryomka +3 more
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Properties of InxGa1−xN films in terahertz range
Applied Physics Letters, 2012 In this letter, we report the characterization of the refractive indices and complex conductivities of a set of GaN films with different carrier concentrations, InN film, and InxGa1−xN films with indium content varying from x = 0.07 to x = 0.14 grown by metalorganic chemical vapor deposition for frequencies ranging from 0.3 to 3 THz using terahertz ...
Gauthier-Brun, A. +7 more
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Dielectric behavior of CaCu_3Ti_4O_12 ceramics in the terahertz range
Optics Express, 2011 The dielectric properties of 1050 °C/12h sintered CaCu3Ti4O12 (CCTO) ceramics have been investigated by using terahertz time domain spectroscopy in the frequency range of 0.2-1.6 THz at room temperature. When applying an external optical field, an obvious variation of dielectric constant was observed and reached up to 7%.
Liang, Wu +5 more
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Electron transport and terahertz gain in quantum-dot cascades [PDF]
, 2008 Electron transport through quantum-dot (QD) cascades was investigated using the formalism of nonequilibrium Green's functions within the self-consistent Born approximation.
Harrison, P. +3 more
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Optical bistability of graphene in the terahertz range [PDF]
Physical Review B, 2014 We use an exact solution of the relaxation-time Boltzmann equation in a uniform AC electric field to describe the nonlinear optical response of graphene in the terahertz (THz). The cases of monolayer, bilayer and ABA-stacked trilayer graphene are considered, and the monolayer species is shown to be the most appropriate one to exploit the nonlinear free
Peres, N. M. R. +4 more
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Liquid Crystal-Tuned Planar Optics in Terahertz Range
Applied Sciences, 2023 Recently, terahertz waves of higher frequencies compared to microwave and radio frequency have shown great potential in radar detection and high-speed wireless communication. To spatially control the wavefront of terahertz beams, various novel components,
Hongguan Yu +4 more
doaj +1 more source