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Sure, burst my bubble, lol. But I need all the help I can get. I have already ordered coumarin 30 and ethylene glycol, because I knew the R6G wouldn't do well at 405 nm. But if the optics don't reflect 405 well, I may be sol with that dye. The range does overlap R6G at the low end. If I could...

BTW, my profile photo is ionized air at the focal point of my NdYAG, 1064nm, so invisible beam.

I have a 405 nm that looks just like your 532. Be happy it has that cheesy key, as my push button got stuck in the on position, so I had to use the key to turn it off. I tried to get the module out, but just ended up making the laser so it wouldn't focus to a tight beam. Just tonight, I was...

Hello. I bought my high power laser to eventually mount on my 3D printer to try my hand at engraving/cutting, although I haven't mounted it yet.

You seem to know a bit about dye lasers, so how much of a problem might previous dye pose when I switch? Can 2 dyes coexist, with one being at a very low level? I know I should flush the old out as best as possible, but I wonder how easy it is to get it all out. It looks like the coumarin 515...

To me, the obvious question is why use pointers in a model instead of modules? Was he going to climb inside to push the buttons/turn the keys on each one? I once was at a house where the owner had a large and very detailed model of some ship or station that he built, that had been used in a...

A friend and I discovered some monazite (Sm) in Colorado, first find of it in the US. He had it analyzed. There was only a very small amount of it. Lots of rare earths around where I live.. I used to treat well water, and a lot of wells had U, Th, Ra and or Rn in them

Not really. Anything active enough to light up a driveway would give off a lot of radiation. Navy ships used to have deck markers, maybe they still do, but they are small and use radium, and are rather hot. Unless you could find tritium vials...

Cool to find an old ad for it!

I just found an old ad for it, stating it will tune from 540 nm to 960 nm. It has been difficult to track down any info on it, even from Lexel. i did find a patent, which I assume is for this laser, which has a lot of info and covers a lot of options for it, such as easy conversion from linear...

I have a nice collection of hot rocks, although now being married, they have to be outside as well. I had a really nice thorite that I unfortunately had to sell, but I got $500 for it. From Colorado

Well, anyone looking for dye, don't use Sigma-Aldrich , as they won't sell it to you... Santa Cruz Biotechnology on the other hand will, although are a bit more expensive. I take back that statement. They do not ship to a residential address either. Chemsavers is the only place I finally was...

I think a laser guide star is to measure atmospheric turbulence so that telescope with adaptive optics can adjust for the least distortion.

Yep, got the circulator which works. After removing a piece of something in the nozzle, it seems to have a good flat and steady flow. There was actually a little dye in it when I got it, but who knows how old it was. Not sure about the optics, but the sticker says it can operate between 454 nm...

Thanks Paul. I used to go down to Lakewood in that time frame, bars, cruising Colfax on weekends, malls, movies.

:ROFLMAO: When I get it working, I will be sure to post pics!

The dye laser.

Looks like the rhodamine 6G has a poor absorption at 405. Coumarin 152A has a peak right at 405, but it doesn't mention EG as a solvent. Coumarin 152 has a peak at 397, but also doesn't mention EG. Coumarin 6H has a peak at 396 and does mention EG as a solvent. It can be tuned between 476 and...

Almost forgot I also have 2 of those NdYAG range finder lasers, although i blew up the flashlamp on one when I upped the capacitor for more power ;)