Question

2. The lasers that you use in the lab have an intensity with a Gaussian profile, Ir) - loexpl-2/o], where lo is the peak intensity, at the beam's centre, is the radius at which the intensity drops to 1/e2 of the peak intensity, and r is the radial distance from the beam's centre. The laser beam has a total power of 1 mW and a half-width- at-half-maximum of an= 5 mm. Find the peak intensity, lo, in units of w/m2 and peak electric field, Eo, in units of V/m, both of which are defined at the beam's centre of the beam. Hint: first find the relation between ao and a1/2

Answer 1

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