Hello there friends from Zemax,

I am trying to define a Gaussian-like source in sequential mode for which I know the far-field diameters and the half-angles of emission.

I know that I can use a Gaussian apodization and in my case, in where I do not want to clip the Gaussian profile, I also know that I should use an apodization factor larger than 1.

However, for defining my source I have always used an object cone angle for the aperture type. Since the far-field angles that I have correspond to the beam diameters, i.e, the radius at where the intensity drops to 1/e^2 from the maximum, I guess that if I use this aperture type with a an apodization factor larger than 1, I would be modeling the case of a Gaussian with a smaller angle of divergence. Am I right? 

What other suggestions do you have in order to be able to properly set the aperture type using parameters computable from my far-field Gaussian-like profile?

Any comment or feedback will be appreciated.