typical laser power density threshold that causes flashblindness is 100 μW/cm2 and prolong exposure at that intensitycan cause permanent eye damage.Derive laser power density at the retina surface, for a laser beamwith an initial beam waist, w 0 distance, d from the eye.Assume w0 =1 mm, λ=500 nm, and emmetropic eye calculate asa function of laser power ranging from 1 mW to 10 Watts, theeye-safe threshold distance from the laser source.Assume aperture of retina is 4mm in diameter and circular

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Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter10: Atomic Physics

Section: Chapter Questions

Problem 41Q

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