8. Estimate the angular spread of a laser beam of wavelength 693 nm due to diffraction if the beam emerges through a 3 mm diameter mirror. How large would be the diameter of this beam when it strikes a satellite 300 km above the earth?

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8. Estimate the angular spread of a laser beam of wavelength 693 nm due to
diffraction if the beam emerges through a 3 mm diameter mirror. How large
would be the diameter of this beam when it strikes a satellite 300 km above
the earth?
Transcribed Image Text:8. Estimate the angular spread of a laser beam of wavelength 693 nm due to diffraction if the beam emerges through a 3 mm diameter mirror. How large would be the diameter of this beam when it strikes a satellite 300 km above the earth?
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