Results 21 to 30 of about 40,370 (319)
Nanoconcentration of terahertz radiation in plasmonic waveguides [PDF]
Optics Express, 2008 8 pages, 5 ...
Rusina, Anastasia +3 more
openaire +6 more sources
Phase-Insensitive Scattering of Terahertz Radiation [PDF]
Photonics, 2017 The nonlinear interaction between Near-Infrared (NIR) and Terahertz pulses is principally investigated as a means for the detection of radiation in the hardly accessible THz spectral region. Most studies have targeted second-order nonlinear processes, given their higher efficiencies, and only a limited number have addressed third-order nonlinear ...
Mihail Petev +10 more
openaire +5 more sources
Light: Advanced Manufacturing, 2022 This paper presents the results of 15 years of studies in the field of terahertz holography at the Novosibirsk free electron laser. They cover two areas: research on obtaining holographic images in the terahertz range and the use of diffractive optical ...
Yulia Choporova +2 more
doaj +1 more source
Nature Communications, 2021 Terahertz radiation has wide array of potential uses, however, finding robust and tunable sources of terahertz radiation has been challenging. Here, Cong et al demonstrate a room temperature terahertz source composed of a two-dimensional hybrid metal ...
Kankan Cong +15 more
doaj +1 more source
Terahertz radiation for tomographic inspection [PDF]
Optical Engineering, 2012 Three-dimensional (3-D) terahertz computed tomography has already been performed with three different reconstruction methods (standard back-projection algorithm and two iterative analyses) to reconstruct 3-D objects. A Gaussian beam model is developed according to the physical properties of terahertz waves such as the energy distribution within the ...
Recur, Benoît +9 more
openaire +3 more sources
Single mode terahertz quantum cascade amplifier [PDF]
, 2014 A terahertz (THz) optical amplifier based on a 2.9 THz quantum cascade laser (QCL) structure has been demonstrated. By depositing an antireflective coating on the QCL facet, the laser mirror losses are enhanced to fully suppress the lasing action ...
Beere, H.E. +8 more
core +5 more sources
Design of a tunable, room temperature, continuous-wave terahertz source and detector using silicon waveguides [PDF]
, 2008 We describe the design of a silicon-based source for radiation in the 0.5-14 THz regime. This new class of devices will permit continuously tunable, milliwatt scale, cw, room temperature operation, a substantial advance over currently available ...
Baehr-Jones, T. +3 more
core +1 more source
Nonlinearity in the Dark: Broadband Terahertz Generation with Extremely High Efficiency [PDF]
, 2019 Plasmonic metamaterials and metasurfaces offer new opportunities in developing high performance terahertz emitters and detectors beyond the limitations of conventional nonlinear materials.
Fang, Ming +5 more
core +4 more sources
Focusing of inhomogeneous polarized modes of a laser waveguide dielectric resonator [PDF]
Радиофизика и электроника, 2020 Subject and Purpose. In this paper, spatial power characteristics of laser beams with inhomogeneous spatial polarization are theoretically investigated depending on whether they have moderate or sharp focusing.
A.V. Degtyarev +3 more
doaj +1 more source
Terahertz radiation of microcavity dipolaritons [PDF]
Optics Letters, 2019 We propose the use of dipolaritons -- quantum well excitons with large dipole moment, coupled to a planar microcavity -- for generating terahertz (THz) radiation. This is achieved by exciting the system with two THz detuned lasers that leads to dipole moment oscillations of the exciton polariton at the detuning frequency, thus generating a THz emission.
A. Seedhouse +3 more
openaire +6 more sources