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FrozenGate by Avery

574nm 36 mW Yellow Laser

Alaskan said:
I'm going to try to pump one of my 575 modules with a higher power 980 nm laser and see what happens, maybe crispy critter the crystal.
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Any thoughts on using active cooling for the crystal? Might be good for a bit more power before getting crispified.
 





Thanks Chris and Paul for confirming the beam quality. That’s amazing. Ignoring shipping, I actually paid more for my first ever laser. It was a uk sold 1mw 532 and I bought it for £30. These 30mW+ 575’s are $30! :eek:
And Chris I’m interested in the results of the 980nm pumping as it would help to narrow down what crystal it is. But make sure you start on low power until you see output. Don’t want to blow healthy crystals. :)
 
From what I've seen of the cut crystals on these, they are very small and active cooling may not be possible. I would use a different diode judiciously, as there is not reason to burn it up on the notion it can take a great deal more than it would take to get 75 mW out at maximum.
 
Does anyone want more Spector measurements on this laser? I’m going back to Raman if not.
 
Alaskan said:
Paul, not so much a stupid act on my part, I suspected they might be the same, but was told (I don't remember who, maybe second hand from the Aussie?) that they were higher quality made by a different source. Regardless of that statement, I decided not to order the expensive one, because the China units were so much cheaper, but then Freeman told me he could not ship for two months, so I ordered the expensive one just to get it in hand and see for myself if they were different, so... you didn't tell me anything I didn't already suspect.
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Got a question. In post 289 you have a photo of the modules. Have you unscrewed the two parts to see what's inside?
 
Thanks for what you helped with already. I’m going to try to see how far I can push it, if it fails that’s only 30 some dollars, I have two more if I kill it. The problem I’m going to have might be a simple one, getting the fiber pump diode energy into the crystal correctly. I will know more if I can pop one open, maybe I can’t, or might destroy it trying.
 
steve001 said:
Got a question. In post 289 you have a photo of --the modules. Have you unscrewed the two parts to see what's inside?
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Nexgen took a 565nm apart see post #225 here: https://laserpointerforums.com/f52/565nm-laserlandaustralia-102826-15.html

Id28sy.jpg
 
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That is one small crystal. Somehow I need to know if the pump diode is ~980nm.
 
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I asked Jordan to post that information here, but I guess he found the other thread first. I knew these lasers weren't what he has been helping with, but the information is pertinent to this thread, none the less.
 
Pump diode input requirements are rather wide, that's why I was hoping 980 would work.
 
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