Question

Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.250 mW....

Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.250 mW.

(a)

If such a laser beam is projected onto a circular spot 1.60 mm in diameter, what is its intensity (in watts per meter squared)?

    W/m2

(b)

Find the peak magnetic field strength (in teslas).

   T

(c)

Find the peak electric field strength (in volts per meter).

V/m

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