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Welcome! What kind of project? Lasers seem to be involved in 4 types of endeavor: Physics, communications, materials processing, and weapons. Which one(s) did I miss?

You use the term 'multimode lasers' a couple of times. I think you mean multimode drivers. A multimode laser is one that does not have a nice, clean, single mode gaussian beam. The increased divergence of multimode diodes has nothing to do with whether or not the driver will operate at more...

What? You're not gonna fire it up? :-)

Yes, yes it is. I've always liked 465 better than 445. My eyes can never decide if 445 is deep cobalt blue or violet. 465 is BLUE.

I live in Deer Island, OR. Look it up, if you can find it :-) I also have a vacation cabin up by Lake Cushman just south of Tacoma. Plenty o' fog last week!

I voted for the 505 just because it's a wavelength I don't have yet. 80 mw should be very visible here in the foggy northwest corner of Oregon!

Gyrotron perhaps?

Agree with the posters telling you pulsed lasers are the way to go here. One other possibility might be the infrared modules from nLight. Each is around 100W out the end of the fiber. If you could collimate the beams you could make a CW device of a couple kilowatts. That being said, at the...

Oh, I know it's illegal. Even criminal potentially. But given the proliferation of grossly overspec aftermarket HID, LED and LEP headlights, is it wrong?

So, I have around 150 100watt LEDs left over from my days building lights for.....indoor gardening enthusiasts. I know it would be illegal to position an array of 80 or so of these along the bottom edge of the rear window of my car wired to a momentary switch to deter tailgaters @ night...

I have higher power diodes in bigger hosts but a little pocket burner would be a cool present from santa.

There are a few on utube :)

Back in my apartment dwelling days I ponted a keychain red at a spider on the ceiling. The little guy attacked the dot, and would chase it like a kitten.

You might have the makings of a decent beam expander there. Do the lenses have any kind of AR coatings?

Indium

Has anyone determined, definitively, what causes the degradation of the blues when de-canned? The last thing I had read is that it's breakdown of CO2 by the intense light at the facet that dooms them. A little carbon reduced on the face of the facet would certainly be bad. But I hear about...

These diodes seem to be out there in the wild but the price......

That would do. How much?

Your old lens looks like it was killed by the laser beam itself. A plastic lens will just melt at the power we're putting through them. Glass lenses can crack or shatter if they have dust or other contamination on them.

Thank you dcolosio! I hope you are enjoying your new toy. I'm pleased with the trade as well :-) As far as I can tell the only thing wrong with the old hene pointer is the fossilized nicads. Hooked up to my bench supply the beam is stable when the thing is eating 12v @ about 2.5 amps. The...