High power laser has a beam diameter of 1 mm and generates an electric field with an amplitude of 0.9 mv/m at the target. find the average power of the laser. e) 1040 w d) 667 w c) 700 w b)845 w a) 511 w

Average power, P = 845 watts

Explanation:

It is given that,

High power laser has a beam diameter of 1 mm, d = 1 mm

Radius, r = 0.0005 m

Electric field,

Average power of the laser is given by :

Where

I is the intensity,

This gives,

P = 844.51 watts

or

P = 845 watts

So, the average power of the laser is 845 watts. Hence, this is the required solution.

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