2d Checkerboard Grating
2d Checkerboard Grating - Related Videos
10:39
Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Cited by 10 •
2016
The measurement protocol and data analysis procedure are given for obtaining transverse coherence of a synchrotron radiation X-ray source along four directions simultaneously using a single 2-D checkerboard phase grating. This simple technique can be applied for complete transverse coherence characterization of X-ray sources and X-ray optics.
08:48
Writing Bragg Gratings in Multicore Fibers
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Cited by 3 •
2016
We describe a technique for inscribing identical fiber Bragg gratings into each core of a multicore fiber. This is achieved by introducing an additional surface into the optical path to mitigate lensing by the curved surface of the fiber cladding.
11:15
Quadruple-Checkerboard: A Modification of the Three-Dimensional Checkerboard for Studying Drug Combinations
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Cited by 3 •
2021
This protocol describes how to study all possible combinations that can be obtained between four drugs in one single experiment. This method is based on the standard 96-well plate micro dilution assay and the calculation of fractional inhibitory concentrations (FICs) to evaluate the results.
12:08
Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
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2015
The fabrication of high contrast gratings as the parallel spectrum splitting dispersive element in a concentrated photovoltaic system is demonstrated. Fabrication processes including nanoimprint lithography, TiO2 sputtering and reactive ion etching are described. Reflectance measurement results are used to characterize the optical performance.
06:00
Assessment of Spatial Lingual Tactile Sensitivity using a Gratings Orientation Test
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Cited by 2 •
2021
This work illustrates a standard procedure and threshold determination by the R-index to assess spatial lingual tactile sensitivity using a gratings orientation test.
FAQs
Square size and spacing determine how the grating distributes the incoming wave into ordered diffraction features. Changing these geometric parameters alters the angles and intensities of the resulting pattern, while wavelength and illumination conditions also contribute. Engineers can therefore vary the geometry to examine how an optical system responds to different spatial structures.
Its repeated square geometry contains structure along two orthogonal spatial axes. The incoming wave is consequently modulated in both directions rather than along only one axis, producing a symmetric, two-dimensional diffraction response. This behavior makes the pattern useful for examining whether an optical system treats horizontal and vertical spatial information consistently.
Illumination conditions affect the angles and intensities recorded in the diffraction pattern. Because the observed response depends not only on the grating geometry and wavelength but also on how it is illuminated, engineers must control or document those conditions when comparing measurements. Consistent illumination supports more reliable calibration and optical characterization.
The grating presents an ordered, repeating spatial structure that an imaging system must transfer to its output. Engineers can examine how clearly the system represents the checkerboard pattern and compare responses associated with its geometric parameters. This provides a structured way to evaluate spatial resolution and how effectively the system preserves spatial information.
During calibration, the symmetric pattern supplies a repeatable spatial reference for evaluating an optical system. Its diffraction response can be examined against the known square geometry, wavelength, and illumination conditions. The resulting comparison helps characterize system behavior and supports measurements of alignment, sensor performance, and spatial information transfer.
Symmetry provides comparable structure in two perpendicular directions, allowing engineers to assess directional differences in an optical system. A response that differs between those directions may reveal alignment or imaging behavior that would be less apparent with a one-dimensional pattern. This makes the grating relevant to sensor evaluation, imaging analysis, and Fourier-optics studies.