Results 21 to 30 of about 1,220,984 (295)

Spatial tomography of light resolved in time, spectrum, and polarization

open access: yesSmart Photonic and Optoelectronic Integrated Circuits 2023, 2022
AbstractMeasuring polarisation, spectrum, temporal dynamics, and spatial complex amplitude of optical beams is essential to studying phenomena in laser dynamics, telecommunications and nonlinear optics. Current characterisation techniques apply in limited contexts. Non-interferometric methods struggle to distinguish spatial phase, while phase-sensitive
Martin Plöschner   +6 more
openaire   +6 more sources

The rotationally resolved infrared spectrum of TiO and its isotopologues [PDF]

open access: yesJournal of Molecular Spectroscopy, 2021
In this study, we present the ro-vibrationally resolved gas-phase spectrum of the diatomic molecule TiO around 1000\,cm$^{-1}$. Molecules were produced in a laser ablation source by vaporizing a pure titanium sample in the atmosphere of gaseous nitrous oxide.
Witsch, Daniel   +5 more
openaire   +2 more sources

Spatially Resolved Dynamic Eigenmode Spectrum of Co Rings [PDF]

open access: yesPhysical Review Letters, 2006
The spatially resolved eigenmode spectrum of micrometer-sized Co ring elements has been determined by means of combined vector network analyzer ferromagnetic resonance and time resolved magneto-optic Kerr effect measurements. Up to 5 resonant eigenmodes were observed in the frequency range from 45 MHz to 20 GHz as a function of an external magnetic ...
Neudecker, Ingo   +8 more
openaire   +4 more sources

The analysis of intensity fluctuations for a fully resolved spectrum: Pyrazine [PDF]

open access: yesThe Journal of Chemical Physics, 1988
Intensity fluctuations in the recently published fluorescence excitation spectrum of pyrazine in the 1B3u←1Ag 000 band are analyzed. A numerical study of a model Hamiltonian of a bright state coupled to a manifold of dark states is performed as an aid to the interpretation of the results. The distribution of fluctuations in the intensities computed for
Kommandeur, Jan   +3 more
openaire   +2 more sources

On existence of the resolvent and discreteness of the spectrum of a class of differential operators of hyperbolic type

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
The existence and compactness of the resolvent are studied in this paper. One of the main results is the criterion of discreteness of the spectrum of a hyperbolic singular differential operator.
Mussakan Muratbekov   +2 more
doaj   +1 more source

Direct and inverse spectral problems for Dirac systems with nonlocal potentials [PDF]

open access: yesOpuscula Mathematica, 2019
The main purposes of this paper are to study the direct and inverse spectral problems of the one-dimensional Dirac operators with nonlocal potentials. Based on informations about the spectrum of the operator, we find the potential and recover the form of
Kamila Dębowska, Leonid P. Nizhnik
doaj   +1 more source

Editorial Note: Impact of COVID-19 on Spectrum operations

open access: yes, 2020
To support our authors, reviewers and editors during the COVID-19 pandemic, the Spectrum Editorial Board has relaxed its timelines for the publication of this most recent issue (Issue 5).  We are working with our authors on their Issue 5 submissions,
Editorial Board, Spectrum
core   +1 more source

Selector for the Spectrum Award 2018

open access: yes, 2018
Billingham was invited to be part of the selection panel for the first Spectrum Award in 2018 alongside Mark Wallinger, Charming Baker, Professor Simon Baron-Cohen, Sacha Craddock and Mary Simpson.
Billingham, Richard, Spectrum
core   +3 more sources

Spectrum of a family of operators [PDF]

open access: yesSurveys in Mathematics and its Applications, 2011
Having as start point the classic definitions of resolvent set and spectrum of a linear bounded operator on a Banach space, we introduce the resolvent set and spectrum of a family of linear bounded operators on a Banach space.
Simona Macovei
doaj  

New Perturbed Proximal Point Algorithms for Set-valued Quasi Variational Inclusions [PDF]

open access: yes, 2004
In this paper, by using some new and innovative techniques, some perturbed iterative algorithms for solving generalized set-valued variational inclusions are suggested and analyzed.
Li, Rong, Shi, Chaofeng
core   +3 more sources

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