Profile of Beam Headed to Indium Cavity

We took a profile of the beam after the faraday headed to the cavity. To compute the beam parameters, I fit parameters to a TEM00 mode instead of using the beamspotsize python package to calculate parameters since that package allows M^2 to float, and the beam waist is inside the Faraday and unaccessible. Taking the folding mirror after the faraday to be z = 0, the waist is located at z = -102.5mm +- 26.1mm and the waist spot size is w0 = 55.0um +- 5.1um. The attached figure shows the curve fit results.