Simulation of Speckle in Free-Space Propagation

doi:10.1117/3.2644988.ch5

Book: Simulating Speckle with Mathematica^®

Author(s): Joseph W. Goodman

Published: 2022

https://doi.org/10.1117/3.2644988.ch5

Author Affiliations +

Abstract

Calculating the diffraction patterns of clear apertures of various shapes is a common task. However, similar calculations for apertures with a complex internal structure are less common. In the case studied here, the internal structure of a rectangular aperture is a random pattern of phase representing a diffuser. To perform the simulation of propagation, choices must be made for the number of samples within the aperture (the parameter in what follows) and the total number of samples in the simulation (the parameter in what follows), as well as the method of calculation. Guidelines for choices of these parameters and methods for clear apertures do not apply in this more complex case.