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So, 1500nm is infrared range and 40W quite serious output I guess at the close range can be a quite dangerous...

For instance this is 500mW laser: https://www.youtube.com/watch?v=HuceDT2R4f4

It's a class 1M laser and a 100% eye safe. We've had it thoroughly tested and certified.

A laser cutter is not at all the same as a laser transmitter. The beam focus, wavelength, emission pulse, etc. are all different to the point where comparing power outputs is not a good idea.

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