Results 31 to 40 of about 1,859,983 (208)
Observation of gate-tunable coherent perfect absorption of terahertz radiation in graphene [PDF]
, 2016 We report experimental observation of electrically-tunable coherent perfect absorption (CPA) of terahertz (THz) radiation in graphene. We develop a reflection-type tunable THz cavity formed by a large-area graphene layer, a metallic reflective electrode ...
N. Kakenov +5 more
semanticscholar +1 more source
Atmospheric Propagation of Terahertz Radiation [PDF]
, 2012 Terahertz (THz) radiation, sandwiched between traditional microwave and visible light, is the electromagnetic spectrum with the frequency defined from 0.1 to 10 THz (1THz=1012Hz). Until recently, due to the difficulty of generating and detecting techniques in this region, THz frequency band remains unexplored compared to other range and tremendous ...
Jingli Wang +3 more
openaire +3 more sources
High-Energy, Short-Duration Bursts of Coherent Terahertz Radiation from an Embedded Plasma Dipole
Scientific Reports, 2018 Emission of radiation from electrons undergoing plasma oscillations (POs) at the plasma frequency has attracted interest because of the existence of intriguing and non-trivial coupling mechanism between the electrostatic PO and the emitted ...
K. B. Kwon +6 more
semanticscholar +1 more source
Terahertz Radiation Effects and Biological Applications
Journal of Infrared, Millimeter, and Terahertz Waves, 2009 We present a brief overview of the literature on biological applications and experimental data on the effects of THz radiation. The region of the electromagnetic spectrum from 0.1 to 10 THz is a frontier area for research in physics, chemistry, biology, materials science and medicine. This area has recently begun to be filled by a variety of sources of
Ramundo Orlando Alfonsina, Gallerano GP
openaire +5 more sources
Elliptically polarized terahertz radiation from a chiral oxide [PDF]
, 2014 Polarization control of terahertz wave is a challenging subject in terahertz science and technology. Here, we report a simple method to control polarization state of the terahertz wave in terahertz generation process. At room temperature, terahertz radiation from a noncentrosymmetric and chiral oxide, sillenite Bi$_{12}$GeO$_{20}$, is observed by the ...
arxiv +1 more source
6.2-GHz modulated terahertz light detection using fast terahertz quantum well photodetectors [PDF]
Scientific Reports 7, 3452 (2017), 2017 The fast detection of terahertz radiation is of great importance for various applications such as fast imaging, high speed communications, and spectroscopy. Most commercial products capable of sensitively responding the terahertz radiation are thermal detectors, i.e., pyroelectric sensors and bolometers.
arxiv +1 more source
A practical guide to Terahertz imaging using thermal atomic vapour [PDF]
, 2022 This tutorial aims to provide details on the underlying principles and methodologies of atom-based terahertz imaging techniques. Terahertz imaging is a growing field of research which can provide complementary information to techniques using other regions of the electromagnetic spectrum.
arxiv +1 more source
Terahertz-induced cascaded interactions between spectra offset by large frequencies [PDF]
, 2019 We explore the dynamics of a system where input spectra in the optical domain with very disparate center frequencies are strongly coupled via highly phase-matched, cascaded second-order nonlinear processes driven by terahertz radiation. The only requirement is that one of the input spectra contain sufficient bandwidth to generate the phase-matched ...
arxiv +1 more source
Flexible generation of structured terahertz fields via programmable exchange-biased spintronic emitters [PDF]
arXiv, 2023 Structured light, particularly in the terahertz frequency range, holds considerable potential for a diverse range of applications. However, the generation and control of structured terahertz radiation pose major challenges. In this work, we demonstrate a novel programmable spintronic emitter that can flexibly generate a variety of structured terahertz ...
arxiv
Narrowband terahertz radiation by an impulsive stimulated Raman scattering in an above-room-temperature organic ferroelectric benzimidazole [PDF]
Phys. Rev. A 98, 013843 (2018), 2018 We observe a terahertz radiation from a hydrogen-bonded organic molecular ferroelectric 5,6-dichloro-2-methylbenzimidazole excited by a femtosecond laser pulse at room temperature. The emitted terahertz wave consists of three oscillatory components, the frequencies of which agree with those of Raman- and infrared-active phonon modes. This suggests that
arxiv +1 more source