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The output of a He-Ne laser has pulse duration of 15 ms and average output power of 1 W per pulse. How much energy is released per pulse?

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The output of a He-Ne laser has pulse duration of 15 ms and average output power of 1 W per pulse. How much energy is released per pulse?

(a) 5 mJ

(b) 10 mJ

(c) 15 mJ

(d) 20 mJ

The question was posed to me in exam.

My enquiry is from Helium Neon Laser in portion Laser of Engineering Physics II

1 Answer

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Best answer
Correct answer is (c) 15 mJ

Best explanation: As we know, Energy = Power X Time

= 1 W X 15 X 10^-3 s

= 15 mJ.

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