Results 11 to 20 of about 14,654 (261)

Control of coherent extreme-ultraviolet emission around atomic potential through laser chirp

open access: yesFrontiers in Physics, 2022
Substantial neutral atoms can tunnel to excited states in an intense laser field and subsequently generate coherent emission through free induction decay.
Chun Yang   +7 more
doaj   +1 more source

Responsibility division method of harmonic sources in coal mine power system

open access: yesGong-kuang zidonghua, 2018
In view of the problem of collinearity of harmonic emission level evaluating method of coal mine power system based on multivariate linear regression, which leaded to the problem that evaluation result was greatly affected by abnormal value problem ...
GAO Yun, SU Jingwei
doaj   +1 more source

Study on the Estimation of Utility Harmonic Impedance Based on Minimum Norm of Impedance Difference

open access: yesIEEE Access, 2020
The existing methods for estimating harmonic impedance usually assume that harmonic impedance is constant in a measurement period. However, for a variety of practical reasons, such as the load change of power grid, utility harmonic impedance may be ...
Fangwei Xu   +5 more
doaj   +1 more source

Research on Urban High Voltage Power Network Harmonic Transfer and Emission Level

open access: yesJournal of Physics: Conference Series, 2022
Abstract With the rapid growth of urban power transmission cable scale, the harmonic pollution in the high-voltage power grid is more transmitted to other power grids of different voltage levels, which makes the harmonic transmission more complicated, increases the harmonic emission level, and makes it difficult to quantitatively analyze
Shangxing Ye   +3 more
openaire   +1 more source

Novelty method for the utility harmonic impedance estimation based on Gaussian mixed model

open access: yesIET Generation, Transmission & Distribution, 2020
The accurate estimation of harmonic impedance on the utility side of a point of common coupling (PCC) is much important to harmonic control, harmonic emission level, and harmonic responsibility analysis.
Zhirong Tang   +3 more
doaj   +1 more source

Hook-and-Loop laser fastening of an optical frequency comb to a strongly driven two-level quantum system

open access: yesResults in Physics, 2022
In order to control the state of a two-level quantum system (e.g. the spin state of an ion qubit), optical frequency combs perform a two-photon stimulated Raman process through stimulated absorption from one comb tooth and stimulated emission into ...
Gilbert Reinisch
doaj   +1 more source

Correlated Emission Lasing in Harmonic Oscillators Coupled via a Single Three-Level Artificial Atom [PDF]

open access: yesPhysical Review Letters, 2015
5 pages, 4 figures + supplemenntary materials accepted for publication in Phys.
Peng, Z. H.   +5 more
openaire   +3 more sources

Research Concerning Electromagnetic Emissions from Residential On-grid PV Systems

open access: yesJournal of Telecommunications and Information Technology, 2021
The paper presents the results of grid power quality tests and wide frequency electromagnetic radiation level tests to which home power networks with photovoltaic systems have been subjected.
Krzysztof Maniak   +4 more
doaj   +1 more source

Angular emission and polarization dependence of harmonics from laser–solid interactions

open access: yesNew Journal of Physics, 2013
Laser plasma interaction experiments have been performed to characterize high order harmonic emission up to the 18th order using high rep rate mJ level laser pulses at relativistic intensities.
J H Easter   +6 more
doaj   +1 more source

Emission spectrum and geometric phase in deformed Jaynes-Cummings model

open access: yesResults in Physics, 2020
The emission spectrum of a qubit (two-level atom) system that interacts with a field in the framework of parity deformations is investigated in this paper.
Abeer S. Altowyan   +2 more
doaj   +1 more source

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