Results 21 to 30 of about 396,888 (285)

Computation of Hopkins’ 3-circle integrals using Zernike expansions [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
The integrals occurring in optical diffraction theory under conditions of partial coherence have the form of an incomplete autocorrelation integral of the pupil function of the optical system.
Janssen A. J. E. M.
doaj   +1 more source

Partially coherent ultrafast spectrography [PDF]

open access: yesNature Communications, 2015
AbstractModern ultrafast metrology relies on the postulate that the pulse to be measured is fully coherent, that is, that it can be completely described by its spectrum and spectral phase. However, synthesizing fully coherent pulses is not always possible in practice, especially in the domain of emerging ultrashort X-ray sources where temporal ...
C. Bourassin-Bouchet, M.-E. Couprie
openaire   +3 more sources

Diffractive shaping of excimer-laser beams for pulsed laser deposition [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
We present a beam-shaping system for a pulsed laser deposition setup. This system is based on two diffractive beam-splitter gratings and is able to produce 2 × 2 mm2 flat-top distributions of UV light with a fluence of 3 J/cm2 on the target some 30 cm ...
Kekkonen V., Hakola A., Kajava T.
doaj   +1 more source

Eigenvalue calibration methods for polarimetry [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
Complex polarisation sensitive systems such as imaging Mueller matrix polarimeters are commonly calibrated using the eigenvalue calibration method. In this paper we present an extensive review of the method and an existing variant.
Macías-Romero C., Török P.
doaj   +1 more source

Multiscale coherence analysis of reference evapotranspiration of north-western Iran using wavelet transform

open access: yesJournal of Water and Climate Change, 2022
This study applies different wavelet coherence formulations for investigating the multiscale associations of reference Evapotranspiration (ET0) of Tabriz and Urmia stations in North West Iran with five climatic variables: mean temperature (T), pressure ...
V. Sreedevi, S. Adarsh, Vahid Nourani
doaj   +1 more source

Mathematical model and dynamical analysis of the human equilibrium seeking training [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2021
The purpose of this work is to determine the ability of the partial directed coherence method to identify the directed interaction between nonlinear systems correctly in presence of nonlinear couplings between systems, as well as in the case when the ...
Horev, Vladimir Sergeevich   +2 more
doaj   +1 more source

Revealing Hidden Coherence in Partially Coherent Light [PDF]

open access: yesPhysical Review Letters, 2015
8 pages, 3 ...
Svozilík, Jiří   +3 more
openaire   +3 more sources

A coherence theorem for pseudonatural transformations [PDF]

open access: yes, 2016
We prove coherence theorems for bicategories, pseudofunctors and pseudonatural transformations. These theorems boil down to proving the coherence of some free $(4,2)$-categories.
Lucas, Maxime
core   +6 more sources

Partial Coherence Estimation via Spectral Matrix Shrinkage under Quadratic Loss [PDF]

open access: yes, 2015
Partial coherence is an important quantity derived from spectral or precision matrices and is used in seismology, meteorology, oceanography, neuroscience and elsewhere.
Schneider-Luftman, D., Walden, A. T.
core   +2 more sources

Partially coherent sources with radial coherence

open access: yesOptics Letters, 2018
Partially coherent sources with radial coherence are proposed. They present a circularly symmetric intensity profile and a degree of coherence whose absolute value only depends on the angular difference between the two considered points. In particular, the source is completely coherent at pairs of points belonging to the same radius.
G. Piquero   +5 more
openaire   +4 more sources

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