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How many megawatts is the laser in a laptop?

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Im wondering how string the laser in my laptop is, and another question, would it work to ta the laser out of a old laptop and mount it on a for say a pen or something and power it with like 2 or 4 double a batteries or how ever many it takes. If that worked could it actually burn paper or somethn if you hold it there long enough? Please dont give me a stupid answer either.