Updated distance from source to AOM based on table constraints
Changed total reference arm distance
Updates to distances based on table constraints
Realized parameters... still needs some work...
Completed fractional laser power through aperture
Added least squares fitting routine to compute 1/e E radius of beam
Added `zig-zag` to plasma arm; updated detector distance accordingly
Altered total distance in reference arm in accordance with updates to plasma arm with zig-zag