What is the cause for this? Help needed, problem since 5 Months now

That’s better and it isn’t looking good… Can you back off the power and get a real light mark…

You want to see the power distribution of the beam, sometimes referred to as power density… A perfect beam should have a Gaussian power curve to it, that you can see if the mark is not too dark…

The-distribution-Gaussian-of-laser-beam-profile-nb

Make sense?

:smiley_cat:

1 Like