Hi,

I would like to run modulation ( which then I will apply to the real components) of the laser beam collimation. I need to pick up the appropriate lenses in order to get a collimated laser beam of 1.2 mm. I thought if I run the simulation first in the Zemax then it should be easier with the practical part. My laser beam parameters are 

I was hoping to create a telescope in SC mode. However, how to define the laser light source. Normally, I would use NA, but I read that this is lens parameters not laser. I don’t see a beam divergence angle in the laser info too.  Does anyone could advise me on how to approach this seems to look like an easy simulation.

Thank you,

Regards,

Marzanna