Most interesting and practical optical instruments use lenses to manipulate the formation of images, so understanding how lenses affect the propagation of light is critical to understand Fourier optics.
In the above video, we'll illustrate some of the principles of Fourier optics visually and intuitively by showing how lenses affect …

In this project we will show how to numerically compute Diffraction Patterns with the Angular Spectrum Method. We'll implement the method with Python and discuss how to simulate them both with monochromatic and polychromatic light like it's shown in the video above.

The Angular Spectrum

In a previous post we …

What happens when the double slit experiment is performed with spatially incoherent light (for example, with a light bulb)? And how does it differ when it is performed with coherent light (for example, with a laser)?

The surface of a spatially incoherent light source can be represented by a collection …

In this project we will show how to numerically compute the Fresnel Diffraction Integral with the Fast Fourier Transform (FFT). We'll implement the method with Python and we will apply it to the study of the diffraction patterns produced by the particle beams in the double slit experiment, showing the …