Terahertz Radiation and Its Detection

2021 ◽  
pp. 147-174
Author(s):  
Hitendra K. Malik
Keyword(s):  
Terahertz Radiation

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

Influence of Anisotropic Scattering Mechanisms on Polarization Dependences of Terahertz Radiation Emitted by Hot Electrons

2014 ◽  
Vol 59 (5) ◽  
pp. 505-514
Author(s):  
P.M. Tomchuk ◽  
◽  
V.M. Bondar ◽  
O.E. Levshin ◽  
◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Anisotropic Scattering ◽  
Hot Electrons ◽  
Scattering Mechanisms ◽  
Polarization Dependences

Selective Properties of a Planar Electrodynamic System for Two-Stage Generation of Terahertz Radiation

2018 ◽  
Vol 13 (1) ◽  
pp. 13-24
Author(s):  
A. V. Arzhannikov ◽  
◽  
P. V Kalinin ◽  
E. S. Sandalov ◽  
S. L. Sinitsky ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Electrodynamic System ◽  
Two Stage

Electro-optical detection of terahertz radiation in a zinc sulphide crystal at a wavelength of 512 nm

2020 ◽  
Vol 13 (11) ◽  
pp. 112007
Author(s):  
Joel Edouard Nkeck ◽  
Xavier Ropagnol ◽  
Riad Nechache ◽  
François Blanchard
Keyword(s):  
Terahertz Radiation ◽  
Optical Detection ◽  
Zinc Sulphide

Photon Counting Microscopy of Terahertz Radiation

2008 ◽  
Vol 36 (Supplement) ◽  
pp. 130-131
Author(s):  
Kenji Ikushima
Keyword(s):  
Terahertz Radiation ◽  
Photon Counting

Generation of Terahertz Radiation in Magnetic Junctions Based on Nanowires

2019 ◽  
Vol 45 (3) ◽  
pp. 271-273 ◽  
Author(s):  
Yu. V. Gulyaev ◽  
S. G. Chigarev ◽  
A. I. Panas ◽  
E. A. Vilkov ◽  
N. A. Maksimov ◽  
...  
Keyword(s):  
Terahertz Radiation

Properties of One-Dimensional Metal Gratings at Inclined Incidence of Terahertz Radiation

2020 ◽  
Author(s):  
Mikhail Dzyubenko ◽  
Sergey Masalov ◽  
Yuriy Kamenev ◽  
Ivan Kolenov ◽  
Viktor Pelipenko ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
One Dimensional ◽  
Metal Gratings

scholarly journals Propagation of shear stress in strongly interacting metallic Fermi liquids enhances transmission of terahertz radiation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
D. Valentinis ◽  
J. Zaanen ◽  
D. van der Marel
Keyword(s):  
Shear Stress ◽  
Terahertz Radiation ◽  
Fermi Liquid ◽  
Zero Sound ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron ◽  
Collisionless Regime ◽  
Propagating Shear ◽  
Mass Enhancement

AbstractA highlight of Fermi-liquid phenomenology, as explored in neutral $$^3$$ 3 He, is the observation that in the collisionless regime shear stress propagates as if one is dealing with the transverse phonon of a solid. The existence of this “transverse zero sound” requires that the quasiparticle mass enhancement exceeds a critical value. Could such a propagating shear stress also exist in strongly correlated electron systems? Despite some noticeable differences with the neutral case in the Galilean continuum, we arrive at the verdict that transverse zero sound should be generic for mass enhancement higher than 3. We present an experimental setup that should be exquisitely sensitive in this regard: the transmission of terahertz radiation through a thin slab of heavy-fermion material will be strongly enhanced at low temperature and accompanied by giant oscillations, which reflect the interference between light itself and the “material photon” being the actual manifestation of transverse zero sound in the charged Fermi liquid.

scholarly journals Photothermal, Photoelectric, and Photothermoelectric Effects in Bi-Sb Thin Films in the Terahertz Frequency Range at Room Temperature

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 76
Author(s):  
Mikhail K. Khodzitsky ◽  
Petr S. Demchenko ◽  
Dmitry V. Zykov ◽  
Anton D. Zaitsev ◽  
Elena S. Makarova ◽  
...  
Keyword(s):  
Thin Films ◽  
Terahertz Radiation ◽  
Room Temperature ◽  
Voltage Drop ◽  
Radiation Detection ◽  
Radiation Detectors ◽  
Thz Radiation ◽  
Terahertz Frequency ◽  
Frequency Range ◽  
Terahertz Frequency Range

The terahertz frequency range is promising for solving various practically important problems. However, for the terahertz technology development, there is still a problem with the lack of affordable and effective terahertz devices. One of the main tasks is to search for new materials with high sensitivity to terahertz radiation at room temperature. Bi1−xSbx thin films with various Sb concentrations seem to be suitable for such conditions. In this paper, the terahertz radiation influence onto the properties of thermoelectric Bi1−xSbx 200 nm films was investigated for the first time. The films were obtained by means of thermal evaporation in vacuum. They were affected by terahertz radiation at the frequency of 0.14 terahertz (THz) in the presence of thermal gradient, electric field or without these influences. The temporal dependencies of photoconductivity, temperature difference and voltage drop were measured. The obtained data demonstrate the possibility for practical use of Bi1−xSbx thin films for THz radiation detection. The results of our work promote the usage of these thermoelectric materials, as well as THz radiation detectors based on them, in various areas of modern THz photonics.

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