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well luckily, i have a large vocabulary of 4 letter words at my access! lol
when i 1st fired it up, reds were the lower power and green yellow and blue were strong, but now reds are far brighter than they were and the yellow is gone and one green is very dim compared to the other.
how long of a recovery burn is typical for these?
i'm not 100% but i think these are external mirror lasers. i'll take a pic a lil later of the HR/OC ends of the tube.
You're correct - sealed mirrors on these, not so fun to attempt to align (Note that I said attempt). Not that external mirrors are fun to align either, just not as bad.
Just easier to work with. Typical recovery burns depend on how long they've been sitting. older lasers are affected more than newer ones. the 300WC is multimode IIRC which makes it a bit easier, but realistically its still not fun. if its sealed mirror, I'd likely leave it be unless I had to, as those are REALLY hard and dangerous to try to realign without some extreme care, if not completely impossible since heat is a huge player here. mine is external mirror and TEM00 so I can dink mirrors all I want. but as a result the power tops at something like 100mW ish. I think I've recently gotten mine back to about 110 ish on a good day. its rated 75, so its still doing good with 1100-1200 hours ish on it. It was somewhat high pressure when I got it, and I've run it for tens of hours on and off, and I think it's still coming down a bit. but acting like a new laser now. a few hours at mid-high current is probably sufficient to make a notable change though. If the reds have suddenly taken a jump its probably due to the lack of the yellow resonating, but if it was weak already minor misalignment may have killed it. How long has this been sitting while you worked on it? if its only been a few weeks pressure isn't your problem likely in a small tube like this. It's more likely alignment or electrical.
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