Autocorrelation Function from Power Spectral Density
It is possible to compute the autocorrelation function from the power spectral density of a light field with the help of the Wiener-Khintchine theorem. This autocorrelation function is directly related to the first-order correlation function and therefore the coherence time of the light. The function takes as the input the wavelenghts with corresponding power spectral density and computes the unnormalized first-order correlation function with the help of an inverse fourier transform.
Cite As
Johannes Thewes (2024). Autocorrelation Function from Power Spectral Density (https://www.mathworks.com/matlabcentral/fileexchange/68854-autocorrelation-function-from-power-spectral-density), MATLAB Central File Exchange. Retrieved .
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