Hello,
New user and first post here. I am trying to collimate a beam coming from a fiber with 0,26 NA, 4,5 nm and apodization of 1.0 in order to have a 6 mm diameter beam along the maximum possible distance (desired between 2-3 meters).
I did it using lenses but now I want to try with an OAP from Thorlabs. This is the model used:

For achieving my goal I think I have to inverse the mirror so the image shown in the picture acts like my source, but I have tried with coordinate breaks and I can not manage to do it. Once I have done it I have to optimize the position of my source using those operands in order to achieve the desired width of the beam right?

Thanks for your help