Physics, 22.09.2019 05:30, jaymiahyman123

Aperson's vision may be improved significantly by having the comea reshaped with a laser beam, in a procedure known as photorefractive keratectomy. the excimer laser used in these treatments produces ultraviolet light with a wavelength of 200 nm. part a) what is the difference in energy between the two levels that participate in stimulated emission in the excimer laser? part b) how many photons from this laser are required to deliver an energy of 1.64x10^-18 j to the cornea?

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Aperson's vision may be improved significantly by having the comea reshaped with a laser beam, in a...