Search results

I just finished fixing one of my 475nm diode laser pens I built a few years ago. The internal battery contact spring broke, but in rebuilding it I ran into the issue of not being sure what the laser modules/diodes polarity was. Luckily I was able to determine it and fix it successfully, but I...

Firstly, welcome to LPF! I think one way to reduce the splash is to switch to a more restrictive lens, like a 3-element lens? Of course if you wanted a perfect beam profile you can us a spacial filter, but that is impractical for a handheld. The splash around the beam is normal for many diodes...

Nice, Thanks for posting. Is the Nichia NUGM04 the highest power green diode we've got now? I guess I haven't been paying much attention. Glad you posted you safety glasses with first pic, literally safety first (picture). I think your blue laser in the fifth picture has a mismatch of laser...

Not sure of your age or responsibility level, or understanding of laser safety and risks. Absent that info, I would suggest sticking with "weak" lasers. At a minimum, start with 5mW, and only then step up to 5-100mW once you understand safety and have some experience handling it safely. At...

I can chime in and say that I don't care, at all. I've long since ignored/muted the channel anyway, and I've got enough ways to waste my time that I don't seek additional one. So it makes no difference to me. 🤷‍♂️

It might be a little easier to answer if you said what the laser would be used for. How precise or fast does the measurements need to be? For focus, any single mode laser diode will get you <0.1mm beam diameter when focused to a point <1m maybe. For safety reasons you'll want to keep power under...

If you bought a generic 532nm (Green) laser, which is most likely 5mW-50mW, then I doubt any other laser will work. Might be better to look at other, non-laser, options. Different wavelengths (colors) could have different effects, but I would doubt it.

Some interesting information in there. Thanks for posting it. Barthchris; Sometime you should definitely make a thread with the images of the diode falures. I'd find that interesting. Also good to add to the community info.

Just to throw in another comment for posterity. As unkown said, green has the highest visibility (lumens/W). A reason that the highest power visible diodes come in blue is due to the physics and commercial applications. The commercial applications result in the necessary funding for research...

Congratulations on getting the Z-fold lasing. 🍺 Most dpss alignment I've ever done was on an educational system, standard linear arrangment, 808->1064->532, So I can't really help.

More wonderful pic's from the legend himself. Beautiful as always!

Nice build! Not to many builds using these due to price, and difficultly of design. Definitely needs active cooling for any real runtime. What is the duty cycle on that? Can you get it to run continuously with the cooling method you've got or does it still get too hot? It looks like it should...

What is the main issue, shipping cost or import restrictions? We do have a few members who might be able to make heatsinks. I'm not sure of any active machinist in the europe area. If you have access to a lathe, it isn't too much work to make a heatsink yourself. For the host you can probably...

You mean the MicroFlexDrive? (https://innolasers.com/shop/index.php?id_product=8&controller=product) I don't see anywhere on the manual were it says. I would think it is the standard CW for higher current and CCW for lower, but I haven't worked with one of those drivers for a while. Though I...

Holograms definitely are a very cool project, it might be a little complicated, but there are kits for it that might be suitable. You could transmit sound through lasers. One simple laser experiment I find fascinating is optical trapping. Using fine diamond powder (or a sharpie tip) one can...

I can confirm that the issue of being scared of using laser is similar to that of firearms. Once you get familiar with how to use it safely there isn't a need to be scared. One still must always pay attention to be safe, but the real danger can be small. If you always use (appropriate, high...

Nice! Do you have to worry about reflections back towards the laser or is enough of it absorbed into the material?

I've done similar to one of my yellows to get a an orange and and red. I don''t know if I ever saw green? That was with dicros also. Pretty fun to play with and look at the modes. Looks like the green is pretty good power too. I'm impressed too tht yoiu get it steady just setting there, they...

What I mean by a diverging beam, is lasers naturally diverge(spread out/get larger) as they travel, if a laser were normaly focus to infinity (where the beam stays as small as possible for as long as possible) then the laser poses maximum risk at far distances. If you were to take the laser and...

Firstly, welcome to LPF. I'm not sure how practical of a solution it would be. At the very start, to even consider doing this in practice, you need to have a good understanding of laser safety, and some laws, as the power you are talking about is dangerous. The main issues I see are: -Pointing...