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I'm working on a Science experiment in which I need to melt very very fine copper powder. I want to do this with a laser, which laser would be best for my application? (More detail) Because the copper powder is so fine it can easily vaporize in the oven, of course some will melt. But I want to...

Hi, Could someone please explain the practical differences between these wave lengths of lasers 980 nm, 808nm, 1064, 1342 nm? I understand the light scale, but what practical differences might there be in their applications? *Also what is the purpose of laser pulses besides measurement...