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Updated: Sep 27, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Spatial width and power-content ratio of hard-edge diffracted beams
Rosario Martínez-Herrero1, Pedro M Mejías, Salvador Bosch
1Department of Optics, Faculty of Physics, Complutense University, 28040 Madrid, Spain.
Abstract:
On the basis of the intensity-moment formalism, certain analytical relationships are obtained for both the angular domain and the size of a transverse region of the beam that ensure a power content of at least 75% of the total power. As an illustrative application, the analytical results are compared with the exact values (numerically computed) of the amplitude of a lowest-order Gaussian beam diffracted by slits.
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