Results 31 to 40 of about 4,580,641 (293)

Nonparaxial Propagation of Bessel Correlated Vortex Beams in Free Space

open access: yesMicromachines, 2022
The nonparaxial propagation of partially coherent beams carrying vortices in free space is investigated using the method of decomposition of the incident field into coherent diffraction-free modes.
Nikolai I. Petrov
doaj   +1 more source

Single-beam phase retrieval with partially coherent light illumination

open access: yes, 2016
A single-beam phase retrieval method with partially coherent illumination is proposed. By using an obverse and reverse iterative (ORI) algorithm, objects can be reconstructed within less time by recording a sequence of diffraction patterns at different ...
Liang, Yansheng   +6 more
core   +1 more source

Mutual optical intensity propagation through non-ideal two-dimensional mirrors

open access: yesJournal of Synchrotron Radiation, 2023
The mutual optical intensity (MOI) model is a partially coherent radiation propagation tool that can sequentially simulate beamline optics and provide beam intensity, local degree of coherence and phase distribution at any location along a beamline. This
Xiangyu Meng   +7 more
doaj   +1 more source

Spatial coherence control and analysis via micromirror-based mixed-state ptychography

open access: yesNew Journal of Physics, 2021
Flexible and fast control of the phase and amplitude of coherent light, enabled by digital micromirror devices (DMDs) and spatial light modulators, has been a driving force for recent advances in optical tweezers, nonlinear microscopy, and wavefront ...
Ruslan Röhrich   +3 more
doaj   +1 more source

Diffraction of Partially Coherent Light as a Nonlinear Operation

open access: yesPhotonics
The linear transformation of optical fields during propagation poses a fundamental limitation for neuromorphic computing applications. In this paper, a realization of a nonlinear operator based on the diffraction of partially coherent light by an ...
Igor Glukhov   +2 more
doaj   +1 more source

Effects of Atmospheric Turbulence on Lensless Ghost Imaging with Partially Coherent Light

open access: yesApplied Sciences, 2018
Ghost imaging with partially coherent light through two kinds of atmospheric turbulences: monostatic turbulence and bistatic turbulence, is studied, both theoretically and experimentally.
Xianlong Liu   +3 more
doaj   +1 more source

Transmission Characteristics and Spatial Coherence of Partially Coherent Light-Emitting Diode Array in the Ocean

open access: yesPhotonics, 2023
Underwater LED light sources are commonly implemented in array configurations with a wide-angle field of view, primarily catering to high-speed communication within a few meters.
Zhifang Miao   +4 more
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Scattering of Partially Coherent Vector Beams by a Deterministic Medium Having Parity-Time Symmetry

open access: yesPhotonics, 2022
We study the scattering properties of the partially coherent vector beams with the deterministic media having the classic symmetric and parity-time (PT) symmetric scattering potential functions.
Xuan Zhang   +3 more
doaj   +1 more source

Smaller is better: nanobodies meet NMR

open access: yesFEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

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