Terahertz binary computing in a coupled toroidal metasurface by Angana Bhattacharya, Bhagwat Singh Chouhan, Kajal Sharma, Sami M. Halawani, Amir Ahmad, Gagan Kumar

“…A multipole analysis of the scattered powers of terahertz radiation determines the toroidal excitation in the metasurface. …”
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Semiconductor Characterization by Terahertz Excitation Spectroscopy by Arūnas Krotkus, Ignas Nevinskas, Ričardas Norkus

“…Surfaces of semiconducting materials excited by femtosecond laser pulses emit electromagnetic waves in the terahertz (THz) frequency range, which by definition is the 0.1–10 THz region. The nature of terahertz radiation pulses is, in the majority of cases, explained by the appearance of ultrafast photocurrents. …”
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Terahertz hyperspectral imaging with dual chip-scale combs by Yang, Yang, Burghoff, David Patrick, Hu, Qing

“…The dual combs are freerunning and emit coherent terahertz radiation that covers a bandwidth of 220 GHz at 3.4 THz with ~10 µW per line. …”
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Maximizing Performance of Quantum Cascade Laser-Pumped Molecular Lasers by Wang, Fan, Johnson, Steven G, Everitt, Henry O.

“…Quantum-cascade-laser- (QCL) pumped molecular lasers (QPMLs) have recently been introduced as a source of powerful (>1 mW) tunable (>1 THz) narrow-band (<10 kHz) continuous-wave terahertz radiation. The performance of these lasers depends critically on molecular collision physics, pump saturation, and on the design of the laser cavity. …”
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Photonic crystal fiber based dual-wavelength Q-switched fiber laser using graphene oxide as a saturable absorber by Ahmad, Harith, Soltanian, M.R.K., Pua, C.H., Alimadad, M., Harun, Sulaiman Wadi

“…The proposed fiber laser has substantial potential for use in applications that require longer duration pulsed outputs such as in range finding and terahertz radiation generation.…”

Improved InGaAs and InGaAs/InAlAs Photoconductive Antennas Based on (111)-Oriented Substrates by Kirill Kuznetsov, Aleksey Klochkov, Andrey Leontyev, Evgeniy Klimov, Sergey Pushkarev, Galib Galiev, Galiya Kitaeva

“…It is found that the terahertz radiation power is almost four times higher for LT-InGaAs samples with the (111)A substrate orientation as compared to (100). …”
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Resonant Gas Sensing in the Terahertz Spectral Range Using Two-Wire Phase-Shifted Waveguide Bragg Gratings by Yang Cao, Kathirvel Nallappan, Guofu Xu, Maksim Skorobogatiy

“…The modular semi-sealed structure ensures the controllable and efficient interaction between terahertz radiation and gaseous analytes of small quantities. …”
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Optical generation of intense ultrashort magnetic pulses at the nanoscale by Anagnostis Tsiatmas, Evangelos Atmatzakis, Nikitas Papasimakis, Vassili Fedotov, Boris Luk'yanchuk, Nikolay I Zheludev, F Javier García de Abajo

“…Our method provides a practical way of generating intense nanoscale magnetic fields with great potential for materials characterization, terahertz radiation generation and data storage applications.…”
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Toxic Effect of Metal Doping on Diatoms as Probed by Broadband Terahertz Time-Domain Spectroscopy by Rohit Kumar, Melania Paturzo, Angela Sardo, Ida Orefice, Qiucheng Yu, Andrea Rubano, Domenico Paparo

“…Despite the strong absorption of terahertz radiation in water, we show that diatoms can be sensed by probing the water absorption enhancement in the terahertz range caused by the water–diatom interaction. …”
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Enhancement of Terahertz Emission by Silver Nanoparticles in a Liquid Medium by Haoyang Wang, Tao Shen, Jinkun Liu, Yan Zhu, Hong Li, Tianwu Wang

“…In this work, a liquid target used for terahertz radiation is embedded with silver nanoparticles (Ag NPs), which makes the material have both the fluidity of liquids and conductivity of metals. …”
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Dual-band terahertz switch with stretchable Bloch-mode metasurface by Jing Wang, Hao Tian, Shuai Li, Guanchao Wang, Yu Wang, Li Li, Zhongxiang Zhou

“…A polydimethylsiloxane (PDMS)-based stretchable metadevice for dual-band switching of terahertz radiation is experimentally demonstrated. The metasurface can efficiently excite dipole resonance of the metal structure and the surface Bloch mode generated by the periodic lattice substrate. …”
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Third order nonlinear correlation of the electromagnetic vacuum at near-infrared frequencies by Francesca Fabiana Settembrini, Alexa Herter, Jérôme Faist

“…The parameters regime where higher order nonlinear correlation results predominant with respect to electro-optic correlation of terahertz radiation is provided.…”
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STUDY OF OPTICAL PROPERTIES AND SPECTRAL CHARACTERISTICS OF BRAIN GLIOBLASTOMA AND LUNG ADENOCARCINOMA by Grigorev R.O., Khodzitsky M.K., Tianmiao Zhang, Demchenko P.S.

“…Tumor cells contain more OH-components in comparison with healthy cells. Since terahertz radiation is heavily absorbed by water, there are differences in the spectra of healthy and oncological cells. …”
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Harmonic Extraction in Graphene: Monte Carlo Analysis of the Substrate Influence by Elena Pascual, José M. Iglesias, María J. Martín, Raúl Rengel

“…Graphene on different substrates, such as SiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>, h-BN and Al<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>3</mn></msub></semantics></math></inline-formula>, has been subjected to oscillatory electric fields to analyse the response of the carriers in order to explore the generation of terahertz radiation by means of high-order harmonic extraction. …”
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Efficiency of Photoconductive Terahertz Generation in Nitrogen-Doped Diamonds by Vitali V. Kononenko, Maxim S. Komlenok, Pavel A. Chizhov, Vladimir V. Bukin, Vladislava V. Bulgakova, Andrey A. Khomich, Andrey P. Bolshakov, Vitaly I. Konov, Sergey V. Garnov

“…The efficiency of the generation of terahertz radiation from nitrogen-doped (∼<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.1</mn></mrow></semantics></math></inline-formula>–100 ppm) diamonds was investigated. …”
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A Terahertz Optomechanical Detector Based on Metasurface and Bi-Material Micro-Cantilevers by Hailiang Zhu, Kai Wang, Ganyu Liu, Gengchen Wang, Jinchao Mou, Weiwei Zhang, Gao Wei

“…Compared with traditional thermal terahertz detectors, the optomechanical detector employs a metasurface absorber as the terahertz radiation coupler and obtains an absorptivity higher than 90% from 3.24 to 3.98 THz, which is much higher than that of traditional terahertz detectors with absorbers made from natural materials. …”
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Three-dimensional nonlinear photonic crystal in naturally grown potassium–tantalate–niobate perovskite ferroelectrics by Chang Li, Xuping Wang, Yang Wu, Fei Liang, Feifei Wang, Xiangyong Zhao, Haohai Yu, Huaijin Zhang

“…They hope that the crystal could provide a useful platform for applications such as terahertz radiation and holography.…”
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Competition between Direct Detection Mechanisms in Planar Bow-Tie Microwave Diodes on the Base of InAlAs/InGaAs/InAlAs Heterostructures by Algirdas Sužiedėlis, Steponas Ašmontas, Jonas Gradauskas, Aurimas Čerškus, Karolis Požela, Maksimas Anbinderis

“…The application of the unique properties of terahertz radiation is increasingly needed in sensors, especially in those operating at room temperature without an external bias voltage. …”
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Optical generation of intense ultrashort magnetic pulses at the nanoscale by Tsiatmas, Anagnostis, Atmatzakis, Evangelos, Papasimakis, Nikitas, Fedotov, Vassili, Luk'yanchuk, Boris, Zheludev, Nikolay I., Javier García de Abajo, F.

“…Our method provides a practical way of generating intense nanoscale magnetic fields with great potential for materials characterization, terahertz radiation generation and data storage applications.…”
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Numerical solver for the out-of-equilibrium time dependent Boltzmann collision operator: application to 2D materials by Wadgaonkar, Indrajit, Wais, M., Battiato, Marco

“…The Time Dependent Boltzmann equation (TDBE) is a viable option to study strongly out-of-equilibrium thermalization dynamics which are becoming increasingly critical for many novel physical applications like Ultrafast thermalization, Terahertz radiation etc. However its applicability is greatly limited by the impractical scaling of the solution to its scattering integral term. …”
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