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So, you are doing your pre-lab due diligence for a Fabry-Perot experiment. You're not alone if you don't see a straight line between the descriptive mathematics and the fringes. I did some soft experiments to help me to recognize the meaning of the fringes. There are a lot of variables to control in a real experiment and running simulations can be so helpful because you can know and control the extraneous factors. That's what's going on in this video. Enjoy!
The simulations described in this video were done using Zemax OpticStudio (www.zemax.com).
As a bonus, at the end I give a "hand-wave-free" explanation of why it is okay to ignore the phase shift the light experiences upon reflection.
If you really don't need the theoretical background of the Fabry-Perot interferometer (Part 1), you can skip ahead to 9:14 (Part 2) where the soft experimentation using MATLAB and Zemax begins.
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