Results 251 to 260 of about 11,957 (302)

Ultrafast Spin Dynamics of Pt/Gd₁₉(Co_0.8Fe_0.2)₈₁/Ta Heterostructure Investigated by Double-Pump Terahertz Emission Spectroscopy. [PDF]

Nanomaterials (Basel)
Li C, Lu B, Yu N, Li Z, Xu H, Zhang H, Jin Z.   +6 more
europepmc   +1 more source

All-silicon terahertz metasurfaces for multi-focus multiplexed polarization generation. [PDF]

iScience
Hu S, Lu Y, Tang T, Wei L, Dai B, Zhuang S, Zhang D.   +6 more
europepmc   +1 more source

Fabrication of Terahertz Fresnel Zone Plates via Ultraprecision Mechanical Processing. [PDF]

Micromachines (Basel)
Chen M, Wang J, Fang F.
europepmc   +1 more source

Terahertz Generation by Multiplication

, 2007
We report on the status of symmetric varactor diode multipliers for signal generation in the terahertz frequency range. The progress and basic principles of Heterostructure Barrier Varactor (HBV) diodes are presented. Furthermore, the design methodology and electro-thermal simulation results of high power HBV multipliers for signal generation in the ...
Jan Stake, Tomas Bryllert, T. Arezoo Emadi, Josip Vukusic   +3 more
openaire   +2 more sources

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Terahertz Bessel beam generator

Applied Optics, 2023
The Bessel beam has broad application prospects in wireless energy transmission and high-speed communications. The traditional Bessel beam generation method has the problems of large volume, low efficiency, and complex manufacturing. To solve the above problems, we present a terahertz Bessel beam generator based on the reflective metasurface, which is ...
Jiu-Sheng, Li, Jie, Cheng, Dong-Ping, Zhang   +2 more
openaire   +2 more sources

Quantum dots for terahertz generation

Journal of Physics: Condensed Matter, 2008
Nanostructures made of semiconductors, such as quantum wells and quantum dots (QD), are well known, and some have been incorporated in practical devices. Here we focus on novel structures made of QDs and related devices for terahertz (THz) generation.
H C, Liu, B, Aslan, J A, Gupta, Z R, Wasilewski, G C, Aers, A J, Springthorpe, M, Buchanan   +6 more
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Semiconductor superlattices as terahertz generators

Physical Review B, 1993
Avoiding any truncation of the Hamiltonian for independent electrons in both ideal and imperfect superlattices subject to a uniform electric field, we show that dipole radiation in the terahertz range should be detectable for many members of the GaAs/Al[sub [ital x]]Ga[sub 1[minus][ital x]]As system.
, Bouchard, , Luban
openaire   +2 more sources

Contactless photoconductive terahertz generation

Optics Letters, 2011
We describe a pulsed terahertz (THz) emitter that uses a rapidly oscillating, high-voltage bias across electrodes insulated from a photoconductor. Because no carriers are injected from the electrodes, trap-enhanced electric fields do not form. The resulting uniform field allows excitation with a large laser spot, lowering the carrier density for a ...
H, Zhang, J K, Wahlstrand, S B, Choi, S T, Cundiff   +3 more
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Terahertz interface physics: from terahertz wave propagation to terahertz wave generation

Journal of Physics D: Applied Physics, 2022
Abstract Terahertz (THz) interface physics as a new interdiscipline between the THz technique and condensed matter physics has undergone rapid development in recent years. In particular, the development of advanced materials, such as graphene, transitional metal dichalcogenides, topological insulators, ferromagnetic metals, and ...
Wanyi Du, Yuanyuan Huang, Yixuan Zhou, Xinlong Xu   +3 more
openaire   +1 more source