Results 101 to 110 of about 2,677,605 (251)

An investigation on THz yield from laser-produced solid density plasmas at relativistic laser intensities

New Journal of Physics, 2018
We experimentally characterize the generation of high-power terahertz radiation (THz) at the rear surface of a target irradiated by multiple laser pulses.
S Herzer, A Woldegeorgis, J Polz, A Reinhard, M Almassarani, B Beleites, F Ronneberger, R Grosse, G G Paulus, U Hübner, T May, A Gopal   +11 more
doaj   +1 more source

3D-Printed Quasi-Optics for Sub-Terahertz Range

The high bandwidth available in the terahertz domain is promising for non-destructive evaluation (NDE) and inspection applications. Although 3D-printing offers great flexibility and fast design iteration when developing quasi-optical components for such ...
Ibrahim, M., Chung, B., Headland, D., Withayachumnankul, W.   +3 more
core   +1 more source

A compact, continuous-wave terahertz source based on a quantum-cascade laser and a miniature cryocooler [PDF]

, 2010
We report on the development of a compact, easy-to-use terahertz radiation source, which combines a quantum cascade laser (QCL) operating at 3.1 THz with a compact, low input-power Stirling cooler.
Semenov, Alexey, Richter, Heiko, Schrottke, Lutz, Grahn, H. T., Giehler, M., Wienold, Martin, Huebers, H.-W., Pavlov, Sergey, Greiner-Bär, Michael, Hey, R., Semenov, Alexei D.   +10 more
core   +1 more source

Unveiling the Ultralow Thermal Conductivity of Hybrid Perovskites

Advanced Science, EarlyView.
In hybrid perovskites, thermal energy flows through lattice vibrations of the framework (48%–65%) and organic molecules (35%–52%). When the disorder introduced by organic molecules is excluded, the temperature dependence of the vibrational thermal conductivity results from the lattice framework transits from ∼T0 to ∼T−1, and the value doubles at room ...
Qinqin He, Yuli Chen, Zhigang Li, Yanguang Zhou   +3 more
wiley   +1 more source

THz field engineering in two-color femtosecond filaments using chirped and delayed laser pulses

New Journal of Physics, 2018
We numerically study the influence of chirping and delaying several ionizing two-color light pulses in order to engineer terahertz (THz) wave generation in air.
A Nguyen, P González de Alaiza Martínez, I Thiele, S Skupin, L Bergé   +4 more
doaj   +1 more source

Intrinsic Phonons as a Dynamic Control Knob for Catalytic Reactivity in 2D Materials

Advanced Science, EarlyView.
Intrinsic phonon excitations are demonstrated to serve as a dynamic control knob for catalytic reactivity in 2D materials. Mode‐selective lattice vibrations reconstruct the electronic structure, lower oxygen evolution reaction barriers, establishing a phonon‐engineering paradigm for dynamically regulating electrocatalysis beyond conventional static ...
Kai Ren, Feifan Wang, Yong‐Wei Zhang, Tianyang Liu, Liangzhi Kou, Yu Jing   +5 more
wiley   +1 more source

A graphene/H-BN van der Waals heterostructure enabling superior (>30 dB) electrical tuning in terahertz devices

npj 2D Materials and Applications
Effective control of terahertz radiation is vital for next-generation wireless communication and sensing. However, achieving efficient tuning of the polarisation, amplitude, and phase of terahertz radiation remains challenging.
A. D. Squires, L.-Z. Song, S. Kuriakose, J. Du, T. van der Laan   +4 more
doaj   +1 more source

Nonlinear Optical Properties in an Epitaxial YbFe₂O₄ Film Probed by Second Harmonic and Terahertz Generation. [PDF]

Materials (Basel), 2023
Yu H, Okimoto Y, Morita A, Shimanuki S, Takubo K, Ishikawa T, Koshihara SY, Minakami R, Itoh H, Iwai S, Ikeda N, Sakagami T, Nozaki M, Fujii T.   +13 more
europepmc   +1 more source

Phase‐Dependent Oxygen Defect Energetics in Epitaxial NbN/AlN/NbN Films

Advanced Science, EarlyView.
Phase dependent oxygen defect energetics in epitaxial δ‐NbN/AlN/δ‐NbN and β‐Nb2N/AlN/β‐Nb2N trilayers. Atomic‐scale analysis and first‐principles calculations reveal distinct oxygen incorporation pathways across NbN polymorphs. Layer resolved defect formation energies show that O is energetically more favorable within δ‐NbN electrodes, whereas in β ...
Prachi Garg, Kedarsh Kaushik, Danqing Wang, Naomi Pieczulewski, Anand Ithepalli, John Wright, Debdeep Jena, David A. Muller, Hong X. Tang, Cyrus Dreyer, Baishakhi Mazumder   +10 more
wiley   +1 more source

Photon Drag Currents and Terahertz Generation in α-Sn/Ge Quantum Wells. [PDF]

Nanomaterials (Basel), 2022
Zhang B, Luo Y, Liu Y, Trukhin VN, Mustafin IA, Alekseev PA, Borodin BR, Eliseev IA, Alkallas FH, Ben Gouider Trabelsi A, Kusmartseva A, Kusmartsev FV.   +11 more
europepmc   +1 more source