# BeamPropagationMethod
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## Description
Simple realization of the beam propagation method based on FFT (Fast Fourier Tranform) for MATLAB/Octave.

Includes several scripts described by their names. One can change values denoted as "User Choices" to get different results.
The file "rect.m" contains the [rectangular function](https://en.wikipedia.org/wiki/Rectangular_function).

## References
- [Hung Loui. Fourier Beam Propagation (2004)](https://www.researchgate.net/publication/228549957_Fourier_Beam_Propagation)