Could you please do the problem attached? Thank you.
A Fabry-Perot etalon is used to resolve two spectral lines of equal intensity, and wavelengths of 670.776 nm and 670.791nm. The etalon plates have a reflectivity R = 0.85.
Determine the minimum separation of the plates, d, for which the two lines are just resolved.
If determines the resolving power of Fabry-Perot etalon plates. The solution is detailed and well presented.