Hello, everyone.
I tried to use a single lens to focus the collimated ray to a single point. When I use FFT PSF analysis, I get peak with diffraction. However, when I use POP, I only can see peak without diffraction. I expected to obtain a peak with diffraction by using POP. What is the difference between FFT PSF analysis and POP.
Thank you in advance.
Best answer by Mark.Nicholson
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