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Testing dodgy 532nm DPSS units, any DPSS Guru's on PL.
Just testing a load of heads which have varying failures; All chinese 1W-2W 532nm DPSS
Most of them are outputting power to spec but some have a strange beam profiles.
On one as an example; when pointing at a wall the spot looks more like a comet; ie has a spot with a tail.
On some the spot is more like a line.
I suspect it is crystal failure/alignment issue as they are giving around the right output power; Also I checked the output optics for cracks and all seam to be fine.
Anyone seen these faults before, any obvious clues to what could be failing?
Andy
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I guess this should be glued together.
Attachment 40333
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