I am a Post graduation student and I am doing a project on the conversion of a Gaussian beam into a flat top beam using optical components. I have found that the best component to do the same is a Powell lens. I would like to know more about the equations connecting the input beam diameter, output beam diameter, wavelength of the light and the fan angle of a Powell lens.
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$\begingroup$ The best thing to do would be to contact their inventor and company that makes them: laserlineoptics.com/specifications.html they could tell you everything you need. $\endgroup$– Selene RoutleyCommented Apr 17, 2015 at 7:58
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