Results 21 to 30 of about 277,211 (280)

Fresnel incoherent correlation holography with single camera shot

open access: yesOpto-Electronic Advances, 2020
Fresnel incoherent correlation holography (FINCH) is a self-interference based super-resolution three-dimensional imaging technique. FINCH in inline configuration requires an active phase modulator to record at least three phase-shifted camera shots to ...
Vijayakumar Anand   +6 more
doaj   +1 more source

Multipion correlations induced by isospin conservation of coherent emission

open access: yesPhysics Letters B, 2016
Recent measurements have revealed a significant suppression of multipion Bose–Einstein correlations in heavy-ion collisions at the LHC. The suppression may be explained by postulating coherent pion emission.
Dhevan Gangadharan
doaj   +1 more source

Intraframe motion correction for raster-scanned adaptive optics images using strip-based cross-correlation lag biases. [PDF]

open access: yesPLoS ONE, 2018
In retinal raster imaging modalities, fixational eye movements manifest as image warp, where the relative positions of the beam and retina change during the acquisition of single frames. To remove warp artifacts, strip-based registration methods-in which
Mehdi Azimipour   +5 more
doaj   +1 more source

Teaching the concept of convolution and correlation using Fourier transform

open access: yes, 2018
Convolution operation is indispensable in studying analog optical and digital signal processing. Equally important is the correlation operation. The time domain community often teaches convolution and correlation only with one dimensional time signals ...
Goodman, Smith
core   +1 more source

A Compact Multi-Distance DCS and Time Domain NIRS Hybrid System for Hemodynamic and Metabolic Measurements

open access: yesSensors, 2021
In this work, we present a new multi-distance diffuse correlation spectroscopy (DCS) device integrated with a compact state-of-the-art time domain near infrared spectroscopy (TD-NIRS) device.
Caterina Amendola   +6 more
doaj   +1 more source

Realizing split-pulse x-ray photon correlation spectroscopy to measure ultrafast dynamics in complex matter

open access: yesPhysical Review Research, 2020
Split-pulse x-ray photon correlation spectroscopy has been proposed as one of the unique capabilities made possible with x-ray free electron lasers. It enables characterization of atomic-scale structural dynamics that dictates the macroscopic properties ...
Yanwen Sun   +7 more
doaj   +1 more source

Correlation analysis and multiple regression formulas of refractive errors and ocular components [PDF]

open access: yesInternational Journal of Ophthalmology, 2019
The multiple regression formulas and correlation of ocular components with refractive errors are presented by Gaussian optics. The refractive error changing rate for the cornea and lens power, the axial length, anterior chamber depth (ACD) and vitreous ...
Chao-Kai Chang, Jui-Teng Lin, Yong Zhang
doaj   +1 more source

Observation of atom pairs in spontaneous four wave mixing of two colliding Bose-Einstein Condensates

open access: yes, 2008
We study atom scattering from two colliding Bose-Einstein condensates using a position sensitive, time resolved, single atom detector. In analogy to quantum optics, the process can also be thought of as spontaneous, degenerate four wave mixing of de ...
A. Aspect   +8 more
core   +1 more source

Measurement of Photon Statistics with Live Photoreceptor Cells

open access: yes, 2013
We analyzed the electrophysiological response of an isolated rod photoreceptor of Xenopus laevis under stimulation by coherent and pseudo-thermal light sources. Using the suction electrode technique for single cell recordings and a fiber optics setup for
C. Michael Jones   +9 more
core   +1 more source

Quantum atom optics with fermions from molecular dissociation [PDF]

open access: yes, 2006
We study a fermionic atom optics counterpart of parametric down-conversion with photons. This can be realized through dissociation of a Bose-Einstein condensate of molecular dimers consisting of fermionic atoms.
D. F. Walls   +2 more
core   +2 more sources

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