Hello,

I am currently modeling a dynamic zoom system constituted of two liquid lens and a lens with a fixed focal length. The goal of this system is to change the size of the gaussian laser beam entering the zoom by a magnification factor in the range [0.2,0.6], so it can be flexible between each change of magnification. 

My problem is the following: I want to measure the magnification in order to be sure that the system can actually work for different magnifications. I had two ideas so far.

The first one is to measure the magnification of the system using the operand PMAG inside the merit function. But it is valid only in the case of a paraxial system. Using a gaussian beam I am not sure that this is the best way to measure the correct magnification.

My second thought was to measure the size of the gaussian beam waist at the entrance of the system, then at the exit and finally do the division (exit/entrance) inside the merit function. However I didn’t find such operand in order to measure the waist size…

I excluded the paraxial gaussian beam data analysis solution because I have to check that the system works for many magnifications.

What would you suggest in order to achieve this calculation correctly ?

I am looking forward for your answer.

Best regards.