Results 31 to 40 of about 94,721 (285)
High Power Laser Science and Engineering, 2023 The spatial distribution of beams with orbital angular momentum in the far field is known to be extremely sensitive to angular aberrations, such as astigmatism, coma and trefoil. This poses a challenge for conventional beam optimization strategies when a
J. B. Ohland +6 more
doaj +1 more source
Компьютерная оптика, 2022 The transport-of-intensity equation provides a new non-interferometric and non-iterative access to quantitative information about the phase of a light wave by measuring intensity distributions. This equation can be used to implement a simple and accurate
N.G. Stsepuro +5 more
doaj +1 more source
The coronagraphic Modal Wavefront Sensor: a hybrid focal-plane sensor for the high-contrast imaging of circumstellar environments [PDF]
, 2016 The raw coronagraphic performance of current high-contrast imaging instruments is limited by the presence of a quasi-static speckle (QSS) background, resulting from instrumental non-common path errors (NCPEs).
Keller, Christoph U. +4 more
core +3 more sources
, 2018 Coronagraphs on future space telescopes will require precise wavefront correction to detect Earth-like exoplanets near their host stars. High-actuator count microelectromechanical system (MEMS) deformable mirrors provide wavefront control with low size ...
Allan, Gregory +11 more
core +1 more source
Rhythmic Calcium Events in the Lamina Propria Network of the Urinary Bladder of Rat Pups
Frontiers in Systems Neuroscience, 2017 The lamina propria contains a dense network of cells, including interstitial cells (ICs), that may play a role in bladder function by modulating communication between urothelium, nerve fibers and smooth muscle or acting as pacemakers.
Thomas J. Heppner +3 more
doaj +1 more source
A smooth introduction to the wavefront set
, 2014 The wavefront set provides a precise description of the singularities of a distribution. Because of its ability to control the product of distributions, the wavefront set was a key element of recent progress in renormalized quantum field theory in curved
Alinhac S +40 more
core +3 more sources
A Demonstration of Wavefront Sensing and Mirror Phasing from the Image Domain [PDF]
, 2014 In astronomy and microscopy, distortions in the wavefront affect the dynamic range of a high contrast imaging system. These aberrations are either imposed by a turbulent medium such as the atmosphere, by static or thermal aberrations in the optical path,
Cheetham, Anthony +5 more
core +3 more sources
MORPHOLOGICAL DESCRIPTIONS USING THREE-DIMENSIONAL WAVEFRONTS
Image Analysis and Stereology, 2011 The present study deals with the analysis of three-dimensional binary objects whose structure is not obvious nor generally clearly visible. Our approach is illustrated through three examples taken from biological microscopy.
Jean Serra
doaj +1 more source
Possible Application of Wavefront Coding to the LSST [PDF]
, 2006 Wavefront Coding has been applied as a means to increase the effective depth of focus of optical systems. In this note I discuss the potential for this technique to increase the depth of focus of the LSST and the resulting advantages for the construction
/SLAC, Langeveld, Willy
core +3 more sources
OftalʹmologiâPurpose: to assess the state of the wavefront in children with myopia, who have various manifestations of digital eye strain and symptoms of ocular surface disorders, and to evaluate the diagnostic significance of wavefront criteria for assessing the ...
I. L. Plisov +2 more
doaj +1 more source