Example 2 A laser beam has a power of 100 mW and an aperture

Last updated: 6/19/2023

Example 2 A laser beam has a power of 100 mW and an aperture of 4 x 10 3 m It emits light of wavelength 6000 A The beam is focussed with a lens of focal length 0 1 m Calculate the intensity of the image