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This is a great place to lurk around and gather info. Also might be worth mentioning, if you get to building a laser be careful that you can't/don't accidentally overdrive the diode and output >5mw. Diodes can simply burn out when supplied too much current but you should check the specs of the...

I've asked it technical laser questions and it gets quite specific. But I never trust it without a grain of salt since at the end of the day, it is just stringing together words and concepts it has "heard" without a human mind that cares if anything actually makes sense (it messes up math quite...

Appreciate the responses everyone. I have a better understanding and some research to do Will update when/if any new questions or curiosities arise

Thanks. This confirms my intuition but is there any deeper physical explanation for why more area (at same power density)=easier to ignite? Less area covered is easier to cool down, to be sure. Just interested if there’s anything more to glean here. You’re totally right. I almost mentioned...

I have a question about the two most powerful handheld lasers I own. I've looked a bit online but nothing has resolved the specific question I have in mind. Not sure if it's answerable in the way I'm presenting it here but figured it was worth a shot. The two lasers are a 1.1W (measured)...

Just wanted to share that it’s been a few months and this thing hasn’t let me down. It’s been a lifesaver and left a good impression during many presentations. It’s never run out of battery on me. I tested it on my LPM and got a relatively stable 6mw output. The funny thing is most people assume...

Piggybacking off what Red said, you 100% still need proper goggles just like it was a visible laser too. Should be obvious, but I wouldn’t count on it. In addition an invisible beam can have unpredictable behavior, i.e. you don’t know what materials will absorb/reflect/pass the light just by...

Best to contact JL support for these types of questions. Gray from JL is great at customer service and a super nice/helpful guy. I've bought from them twice. I can't answer all your questions but I'll do a couple I'm not sure exactly what is meant by "cut off", but beam expanders typically...

Generally it's easier to run it under-spec than to overdrive the current, but depends on your specific diode and setup. Something to do some research on. Unless someone here knows better :)

Happy Halloween! Hopefully pumpkins lasered with 635 and 589nm is close enough! (kids don't try this at home)

Beautiful. Walking in the room would be like an alternate reality where orange and yellow lasers are the common ones 😅 I was very fascinated with farbe's work on this I'm glad to see it in action

I own two of them, not comparable to GLPs. The beam has an elongated rhombus-like profile, but focuses nicely to a small dot unlike some high power blues. Since the aqua color comes directly from the diode, there is no IR produced. Many would say no, my honest opinion is that it depends on the...

You would likely need somewhere in the 10s of watts if not stronger. Lasers build heat like a magnifying glass, by focusing light down to a tiny spot. The larger the spot, the greater power needed for an equal heating effect. My 1W 1064nm laser struggles to heat orange objects even when focused...

Would it ever be possible for the lasing medium to be a beam (not necessarily laser beam) of particles moving at the speed of light itself? Imagine aiming the source laser orthogonal to the medium for zero Doppler effect, and increasing the fraction of c by bringing the beams closer to parallel...

Super interesting, definitely learned a few new things I wasn't intending to from your reply and what a neat coincidence that you were working on something similar. I was imagining a Doppler type of effect too but I wasn't sure if there was a problem with that logic. My intuition tells me if...

Thanks for taking my comment into consideration. I always feel like a buzzkill with things like this but safety really is important 😅. I can't vouch for laserpointerstore since I've never ordered from there, but I've heard good and bad things.

Here with a (potentially) dumb idea that somebody with a stronger physics/lasers background can hopefully pick apart. So this much I understand about lasers: there is A) a lasing medium, be it solid-state, dye, gas, semiconductor, etc. and B) a pump source such as electricity, light from...

In my honest opinion it sounds like even though you feel like you've done a lot of research you should wait a bit on this one. If you're set on a powerful laser, I'd go for something in the 100-500mw range first with safety glasses and get used to working with powerful lasers before you go for...

$120 + $20 shipping. 575nm is harder to get your hands on but Lasence shouldn't be taking people's money and running with it--when my initial order couldn't be fulfilled they immediately took me through the refund process. If it was another shop on albibaba then, 🤷‍♂️ I was wondering the same...