I would like to use lenses from Thorlabs to collimate the NA=0.22 beam to around 0.4mm size. What merit functions should I use to achieve this goal? Can I also use Stock lens matching and merit functions together to achieve this goal?
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Merit functions for light collimation
Best answer by Mark.Nicholson
Yes that's right Steve: the Angular criterion reduces RMS angle the same way that the spot criterion reduces RMS spot
To set collimation at surface i, and spot (say) at surface j, use the IMSF (Image Surface) operand in the merit function to redefine the image surface on the fly. So in the MFE:
IMSF i #set surface i to be the image surface
#add operands here using the Start At dropdown in the Optimization wizard
IMSF j #set surface j to be the image surface
#add operands here using the Start At dropdown in the Optimization wizard
- Mark
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