A physics laser question?

A physics laser question?
Fusion is the process by which the sun produces energy. One experimental technique for creating controlled fusion utilizes a solid-state laser that emits a wavelength of 1064 nm and can produce a power of 1.0 x10^14 W for a pulse duration of 1.10 x 10-11 s. In contrast, the helium/neon laser used at the checkout counter in a bar-code scanner emits a wavelength of 633 nm and produces a power of about 1.0 x 10-3 W. How long (in days) would the helium/neon laser have to operate to produce the same number of photons that the solid-state laser produces in 1.10 x 10-11 s?
___ days

Best answer:

10^17 seconds, I don’t feel like figuring it out in days.

Tags: Laser, physics, question

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