Results 61 to 70 of about 139,045 (195)

Signatures of electronic structure in bi-circular high-harmonic spectroscopy

open access: yes, 2017
High-harmonic spectroscopy driven by circularly-polarized laser pulses and their counter-rotating second harmonic is a new branch of attosecond science which currently lacks quantitative interpretations.
Baykusheva, Denitsa   +3 more
core   +1 more source

Removing non-stationary, non-harmonic external interference from gravitational wave interferometer data [PDF]

open access: yes, 1999
We describe a procedure to identify and remove a class of non-stationary and non-harmonic interference lines from gravitational wave interferometer data.
A. Abramovic   +19 more
core   +3 more sources

High Harmonic Generation in SF$_{6}$: Raman-excited Vibrational Quantum Beats

open access: yes, 2007
In a recent experiment (N. Wagner et al., PNAS v103, p13279) on SF$_{6}$, a high-harmonic generating laser pulse is preceded by a pump pulse which stimulates Raman-active modes in the molecule. Varying the time delay between the two pulses modulates high
Bersuker I B   +6 more
core   +1 more source

Multi-Harmonic Sources Harmonic Contribution Determination Based on Data Filtering and Cluster Analysis

open access: yesIEEE Access, 2019
Accurately determining power consumer harmonic contribution determination is an effective method to solve power quality disputes and alleviate harmonic pollution of power grids.
Haoyuan Sha   +5 more
doaj   +1 more source

Interference effects in two-photon ATI by multiple orders high harmonics with random or locked phases

open access: yes, 1999
We numerically study 2-photon processes using a set of harmonics from a Ti:Sapphire laser and in particular interference effects in the Above Threshold Ionization spectra.
A. Rundquist   +23 more
core   +1 more source

A grid frequency estimation method based on moving average filter half-tangent phase-locked loop

open access: yesDiance yu yibiao
This paper proposes a half-tangent phase-locked loop (HTan-PLL) with a moving average filter (MAF) for estimating grid frequency. The proposed PLL utilizes a half-tangent phase detector (PD) and introduces MAF into the phase-locked loop to address ...
WANG Wenguo, ZHANG Ben
doaj   +1 more source

Second harmonic generation from strongly coupled localized and propagating phonon-polariton modes

open access: yes, 2018
We experimentally investigate second harmonic generation from strongly coupled localized and propagative phonon polariton modes in arrays of silicon carbide nanopillars.
Cernansky, Robert   +10 more
core   +1 more source

Investigation of Supra-Harmonics through Signal Processing Methods in Smart Grids

open access: yesTransactions on Environment and Electrical Engineering, 2017
Nowadays supra-harmonic distortion studies are gaining attention day by day in power quality research area. When handling communication systems especially Power Line Carrier (PLC) systems in frequency range 2- 150 kHz, they are suitable for causing ...
Turgay Yalcin   +3 more
doaj   +1 more source

Formation of fundamental structures in Bose-Einstein Condensates

open access: yes, 1997
The meanfield interaction in a Bose condensate provides a nonlinearity which can allow stable structures to exist in the meanfield wavefunction. We discuss a number of examples where condensates, modelled by the one dimensional Gross Pitaevskii equation,
Castin Y   +6 more
core   +1 more source

An Evaluation of Distortion and Interference Sources originating Within a Millimeter-wave MIMO Testbed for 5G Communications

open access: yes, 2018
This paper presents an evaluation of distortion and interference sources, namely, the harmonic distortion and antenna crosstalk, originating within a 2 x 2 millimeter-wave (mm-wave) multiple-input-multiple-output (MIMO) testbed.
Buisman, Koen   +3 more
core   +1 more source

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