Results 31 to 40 of about 1,986,833 (274)
Ultrafast control of polarization of terahertz generation from laser–gas interaction using orthogonal few-cycle double-pulse lasers [PDF]
AIP AdvancesThe effect of orthogonal few-cycle double-pulse laser parameters on the terahertz polarization states generated from laser-driven gas plasma is investigated.
Xue Liu +5 more
doaj +1 more source
Micromachines, 2021 Sapphire and silicon carbide substrates are used for growth of the III-N group heterostructures to obtain the electronic devices for high power and high frequency applications.
Simonas Indrišiūnas +3 more
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Graphene-controlled Terahertz Plasmonic Laser [PDF]
CLEO: 2013 Postdeadline, 2013 For the first time, we demonstrate that monolayer graphene can control surface-plasmon modes in terahertz lasers. Integrating a graphene-coated, multi-band filter, varied in situ by electrochemical gating, individual modes can be switched on and off. © 2013 OSA.
Chakraborty, S. +5 more
openaire +2 more sources
Control of transverse mode content and polarization structure of terahertz coherent beams [PDF]
Компьютерная оптика, 2019 The paper is devoted to investigation of forming multimode coherent beams of terahertz radiation with pre-given transverse mode content and terahertz vector beams by use of silicon diffractive optical elements forming single modes from terahertz free ...
Vladimir Pavelyev +4 more
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APL Photonics, 2023 Terahertz quantum cascade laser sources based on intra-cavity Cherenkov difference-frequency generation in dual-wavelength mid-infrared quantum cascade lasers are currently the only monolithic semiconductor laser technology that can deliver continuous ...
Wolfhard Oberhausen +7 more
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Active Stabilization of Terahertz Semiconductor Dual‐Comb Laser Sources Employing a Phase Locking Technique [PDF]
Laser & Photonics reviews, 2020 Dual‐comb sources with equally spaced and low phase noise frequency lines are of great importance for high resolution spectroscopy and metrology. In the terahertz frequency range, electrically pumped semiconductor quantum cascade lasers (QCLs) are ...
Yiran Zhao +10 more
semanticscholar +1 more source
Results in Optics, 2023 The present study proposes a methodology for improving terahertz (THz) radiation through the utilisation of a laser directed towards a graphene strip that has been coated onto a GaAs structure.
Sandeep, Hitendra K. Malik
doaj +1 more source
Observation of the field-free orientation of a symmetric-top molecule by terahertz laser pulses at high temperature [PDF]
, 2016 We investigate experimentally and numerically the field-free orientation of the symmetric top molecule of methyl-iodide at high temperature using a terahertz radiation generated by a plasma induced by a two-color laser beam.
P. Babilotte +6 more
semanticscholar +1 more source
Spatial-energy characteristics of focused modes of a metal terahertz laser resonator [PDF]
Радиофизика и электроника, 2019 Subject and ppurpose. In this paper, the spatial-energy characteristics of laser beams with inhomogeneous spatial polarization with their moderate and sharp focusing are theoretically investigated.
S.A. Vlasenko +3 more
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Observation of extremely efficient terahertz generation from mid-infrared two-color laser filaments
Nature Communications, 2020 Extreme nonlinear interactions of THz electromagnetic fields with matter are the next frontier in nonlinear optics. However, reaching this frontier in free space is limited by the existing lack of appropriate powerful THz sources. Here, we experimentally
A. Koulouklidis +6 more
semanticscholar +1 more source