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An Nd-YAG (lambda = 1064nm) laser used in eye surgery emits a 1.00mJ pulse in 1.00...

An Nd-YAG (lambda = 1064nm) laser used in eye surgery emits a 1.00mJ pulse in 1.00 microsecond. The laser beam has a diameter of 2mm. The focusing system of the eye has a focal length of about f=20mm.

a)Find the power density (in W/m2) on the cornea of the eye during one pulse.

b) Find the power density (in W/m2) delivered to the retina by one pulse.

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