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Thank you for helping me brain storm but it turns out the problem was my alignment all along. My beam was hitting the center of the guide ring but not actually the center of the second mirror. I've...

Just to make sure I'm not misunderstanding you, isn't this a standard alignment check on the x axis? I'll double check to make sure it's close enough to the center of the mirror, but I also want to...

Thanks for taking the time. I did a spot check using acrylic and the beam seems pretty even to me. I've attached a photo. The coupler looks good with no obvious dirt/damage. I have a mA meter on the...

Searched through the forum about this beam splitting/halo/ghosting effect but all answers are basically check your alignment.

tldr: why is my laser doing a halo cut when my alignment seems okay?
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