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I just need the modules

I will take at least three if they are 575-578 range. I have been looking for this wavelength range in an affordable package for a very long time. Hoping they modulate well too for use in laser projectors. 30mw will be fine as I can pbs two for 60mw.

What beside lots of money do you need to get this museum going. I think it’s getting critical in time to telll the story before it’s too late to be told. Might be time to start a campaign to fund something too. What universities were most involved could start there. They might pony up space...

Try ebay phillip. I see them a lot but have not looked lately.

For practical purposes the answer is no with one exception. Break it in half and it will be a black laser. Seriously thou. The nature of a laser is such that it emits a single or close to single wavelength. That’s part f it’s special abilities. Thus if you tried to filter it you’d see...

You could shove a 9 w in there now and literally make it almost functional. Or an IR array and make it functional. Just use a visible with it for aiming.

I don’t know but I’ll take a stab at it. The helium is used in argon lasers normally but the neon is used with helium to transfer energy and make the transition lines thus I’d expect them to compete and the neon to win. I guess you could get both lines working but I think it would be very...

Absorption is material dependent. One material might absorb 405 great but not 355. One material might cut great on co2 but poorly on diode.

All I can say is num num num. dinners ready. Hope they do it that would be a nice diode.

The widening is another effect I am going to call Kerr but I think I’m wrong. Idea is as it heats the refractive index changes defocusing the beam. Kerr can do that but that’s not the same principle.

It’s called mode hopping and you can’t prevent it without temp control. I’d suggest try heating the front end and leave the diode alone. You might get lucky. Or….dump it and get something stable. They are cheap these days.

the range of phase matching on this stuff can be all over the place so don't be too hard on them. I've seen some between 805-820 You just don't always know. This is usually temp tuned on the doubling crystal to match the pump but on the cheap stuff like this that is what you get. For all you...

For fun put the diode in the fridge and then screw it backmon quick and take reading. If the diode is shifting that should tell you. 2nm is The usually window so 810 is right there. I didn’t say fridge the whole thing as if you cool the shg Crystal you’ll off tune it. Those usually like to...

Let’s start with what not to do with it. Don’t point it any any living thing, moving vehicle, reflective surfaces, trees or scrubs with people behind or possibly behind them. Remember it only needs a tiny gap to get through. Be careful not to hit a neighbors windows. I like laser art with...

For a laser with a high pressure tube 2k is not a viable option. Hence zero replies. I don’t need one but you will not see more than 200-500 for it. Looks like a nice unit. Run it for dozen hours and see if the hard start stops. you need to exercise these guys or they stop working. I’m...

Ahhh I didn’t read that right. They are draining the charge not making a bolt

I searched rescue laser for boats and they sell them. It’s just a laser with a cylinder lens to spread the beam out. I’d buy one as it is already controversial in terms of its use. Ie flashing lasers at other vehicles is illegal. There appears to be an exemption for this use so at least buy...

true. Fire up a hollow rod. There is no current on the inside likely

So how do they stop the lightning from destroying their laser everytime it strikes. I guess they defocus the beam and recollimate it just before send it to the sky? Launch from fiber?

That looks 561 ish yellow green