SOLVED: Problem 1:Diffraction limited focus A 5mm diameter laser beam with a wavelength of 633 nm is focused by a lens,which has a 12 mm input diameter and a focal length of
Diffraction-limited system - Wikiwand
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Beam divergence, explained by RP; angle
Identification and visualisation of microplastics/ nanoplastics by Raman imaging (ii): Smaller than the diffraction limit of laser? - ScienceDirect
Laser Beams, Diffraction Gratings and Lenses - ppt download