Related Experiment Video
Updated: Jun 12, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Constant radial shearing interferometry with circular gratings
Abstract:
A radial shearing interferometer with two equispaced circular gratings is described for obtaining a constant radial displacement of the test wavefront. The procedure for the fringe analysis is shown by applying the Fourier transform method to the circular fringe pattern for precisely obtaining the differentiation of the test wavefront. A novel method is also shown for holographically making the equispaced circular gratings by using a cylindrical mirror and a collimating lens. It is shown that the deflection and misalignment of the gratings will not appear in the interferogram by using the holographic production method.
Related Concept Videos
Deformation in a Circular Shaft
Circular Shaft - Stresses in Linear Range
Plastic Deformation in Circular Shafts
Residual Stresses in Circular Shafts
IR Spectrometers
Mohr's Circle for Plane Strain
Mohr's circle visually represents the strain states under various conditions, which is essential for understanding material behavior. The center of Mohr's...

