Related Experiment Video
Updated: Mar 19, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Dimensional properties of a diffracted vortex beam by triangular aperture
None:
The vortex beam has become an indispensable tool in various fields such as particle physics, imaging, and optical communication systems. A key feature of the vortex beam is its topological charge (TC), which quantifies the amount of orbital angular momentum carried by the beam. Accurate determination of the TC is crucial for all vortex beam applications. A commonly used method for TC measurement involves diffraction through a triangular aperture. However, there remains a gap in the literature regarding the precise dimensional constraints between the vortex beam and the triangular aperture. In this study, we present a concise and rigorous mathematical model, supported by numerical simulations, to determine the dimensional limits of both vortex beams and triangular apertures, based on geometric considerations.
Related Concept Videos
Interference and Diffraction
Thin-Walled Hollow Shafts
Deformations in a Transverse Cross Section
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
Beams with Unsymmetric Loadings
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
Prismatic Beams: Problem Solving
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
Distributed Loads: Problem Solving

