How to fit the Fourier optical formula using matlab

[xiaoxin8949]

Homework Statement

For this formula, I don't know how to fit this formula to obtain the light intensity distribution. What I try to fit is a straight line parallel to the x-axis。
This one is about light passing through the surface of the liquid and forming a light field at the bottom of the water

Relevant Equations

y = k0 * (n - 1) * A * cos(w - k * x)
E = E0 * exp(1i * y1)

Solved by matlab

 

[berkeman]

Welcome to PF.

So do you still have a question, or are you all good now?