Results 91 to 100 of about 40,370 (319)

Broadband terahertz-power extracting by using electron cyclotron maser

open access: yesScientific Reports, 2017
Terahertz applications urgently require high performance and room temperature terahertz sources. The gyrotron based on the principle of electron cyclotron maser is able to generate watt-to-megawatt level terahertz radiation, and becomes an exceptional ...
Shi Pan   +3 more
doaj   +1 more source

Progress in Surface Plasmon and Other Resonance Biosensors for Biomedical Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This is the shortened version: Recent advancements in surface plasmon resonance and other optical resonance biosensors for biomedical applications are presented. Advanced sensing strategies are examined for the detection of diverse analytes, integration of nanomaterials and machine learning, and emerging nonplasmonic modes like guided mode resonance ...
Faten Bashar Kamal Eddin   +8 more
wiley   +1 more source

Enhanced terahertz radiation generated by intense laser interaction with a two-layer thin solid target

open access: yesPhysical Review Accelerators and Beams
A terahertz radiation enhancing scheme, in which a linearly polarized weakly relativistic laser pulse irradiates a target consisting of two parallel thin-solid layers with a certain gap, is proposed and studied by using two-dimensional particle-in-cell ...
J. Y. Hua   +5 more
doaj   +1 more source

Binding energies of hydrogen-like impurities in a semiconductor in intense terahertz laser fields

open access: yes, 2003
A detailed theoretical study is presented for the influence of linearly polarised intense terahertz (THz) laser radiation on energy states of hydrogen-like impurities in semiconductors.
Feldhaus J., J. L. NIE, L. B. LIN, W. XU
core   +1 more source

Extreme Terahertz Nonlinearity of AlGaN/GaN‐Based Grating‐Gate Plasmonic Crystals

open access: yesAdvanced Optical Materials, EarlyView.
Plasmonic crystals based on grating‐gated 2D electron gas in AlGaN/GaN heterostructures provide a platform for strong light‐matter interaction. Pump‐probe experiments revealed strong terahertz nonlinearity leading to 45% increase in transmission at a fluence below 350 nJ cm−2.
Pavlo Sai   +14 more
wiley   +1 more source

Terahertz Radiation Power Characterization and Optimization of Stack of Intrinsic Josephson Junctions

open access: yes, 2012
Terahertz radiation of the stack of intrinsic Josephson junctions in the mesa structure of the layered high-Tc superconductors is analyzed and presented in this work.
Fardmanesh, Mehdi   +2 more
core   +1 more source

Carbon‐Coated Moth‐Eye Structure: An Ultrabroadband THz‐DUV Near‐Perfect Absorber

open access: yesAdvanced Optical Materials, EarlyView.
A silicon moth‐eye surface coated with pyrolytic carbon achieves >98% absorption from 1 to 1200 THz by combining gradient‐index matching with PyC's broadband conductivity, forming an ultra‐broadband absorber from THz to deep UV. Experimental results and simulations agreed well.
Yuki Hakamada   +18 more
wiley   +1 more source

Terahertz Spoof Surface Plasmon Polariton Structure for High‐Precision Gas Sensor Technology

open access: yesAdvanced Photonics Research, EarlyView.
This study presents a high‐sensitivity THz sensor based on spoof surface plasmon polaritons, optimized for gas sensing. The multilayer structure enables placement of the sample material in the densest region of the plasmonic surface waves, enhancing interaction with THz waves and significantly improving sensitivity to small refractive index variations ...
Vahid Najafy   +2 more
wiley   +1 more source

InP double heterojunction bipolar transistors for terahertz computed tomography

open access: yesAIP Advances, 2018
We present experimental studies of terahertz radiation detection by InP double heterojunction based transistors. We analyze the relation between their static characteristics and the experimentally determined voltage and current responsivities, showing ...
Dominique Coquillat   +8 more
doaj   +1 more source

TERAHERTZ RADIATION IN COMPLEX PLEOPTO-ORTHOPTIC TREATMENT OF AMBLYOPIA AND ELIMINATION OF FUNCTIONAL SCOTOMA

open access: yesОфтальмохирургия, 2017
Purpose. To estimate the efficiency of the terahertz radiation in the frequency of the molecular spectrum of radiation and absorption of atmospheric oxygen of 129.0GHz in a complex pleoto-orthoptic treatment of amblyopia and elimination of functional ...
K. U. Eremenko   +2 more
doaj   +1 more source

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