How long in days would the heliumneon laser have to operate


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 1030 nm and can produce a power of 1.00 x 1014 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 632 nm and produces a power of about 1.00 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 1.10x 10-11 s?

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Physics: How long in days would the heliumneon laser have to operate
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