Yep, same one I have, you are correct, not a thermopile.
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So should be accurate enough for low power pointers too. It has a 20mW range, so should handle sub mW.
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I wonder how difficult it will be to permanently seal the head of the host? I might have it shipped to my workplace again and have a look if anything can be done.
Maybe, not sure. Some silicon RTV and the focus set to infinity and also sealed might do it. Just PM me the address when you decide. A small bag of silicon gel in the driver section could help too. IDK, silicon might not seal against moisture well enough.
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I think the hardest part would be trusting myself that I’ve sealed it well. But its just a thought.
Eh, maybe a zip lock bag with silicon gel beads to soak up moisture might be more than enough. OK, calling it a night, catch you later.
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Well, its seemed to have done well enough for you over time. Some lost their to degradation quickly. Night Chris.
@Laser_Project Got my LPM working again today. It was my old transformer that had the problem.
Forgot I had burnt a mark into the sensor though with my NUBM44. 
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I burned mine a bit too, same diode.
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It’s so easily done. I didn’t even finish measuring it but it exceeded 7W by that point. It was still climbing
I learned to defocus
I’ve learnt the hard way too
Inside the 577 nm module. I’m trying to understand the cavity, drew out how I’m guessing it works, red for IR, of course.
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That is nice compact setup inside there. Not surprising with coherent.
I’d love to see what went on to engineer this thing, all of the steps needed to produce it. I am in awe of the capabilities someone had to have to create this laser, what we had to learn to do so. I know, a lot of people were involved to get to this state of technology.
Sometimes I question the intelligence of humanity and our worth as a species, then I see rays of light coming from projects like this which amaze me what we are collectively capable of.
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So would I. A lot of precision is needed.
That’s what I like in science, precision. Edit: My cells which were too long are 68 mm long each without a magnet, so about 70 mm long each with the magnets. I tried them without magnets just to see how well they fit, still too long to screw the end cap all of the way down. I’d use button top 18650 batteries which are no longer than 65 mm each, including the button on it.
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All of my files and articles collected about yellow lasers here: Yellow-Orange Lasers - 561, 589, 618+ (imageevent.com)
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This is a great resource. Thanks for sharing.
I’ve been googling trying to find an article explaining how OPSL lasers work and not finding it, although reading what I did find, I am no longer sure I have a clue how they are pumped, as far as wavelength, I mean. I understand the semiconductor is optically pumped and that the BRF crystal selects the wavelength produced, but I cannot seem to find what the pump laser diode requirements are.
Initially, I thought the OPS was being pumped with 1154, but that doesn’t make sense, it must be pumped with another wavelength and the OPS together with the BRF crystal determines the wavelength, do either of you have insight on this technology?
I mean why use OPSL if you can just double the wavelength of 1154 to produce 577 as a DPSS?