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Hey All! It's been many moons since I was in here. I started learning CNC milling/engraving, ended up using a Laser engrave software for my gerbil code, and am looking to swap in a laser module. Can anyone recommend where to go, including whether there's a specialty forum or channel for that...

https://futurism.com/scientists-have-created-a-totally-new-type-of-laser-with-light-and-water-waves/ A bit fuzzy on what they are doing, but they appear to be pumping (like a diode or pump laser) around a section of water to create something entirely new.

Hi! So I built this 3D printer last week, and designed a neat doodad in blender, but woe is me, for the doodad is going to require a resolution of about 0.08-0.1mm, while my printer is only 0.4mm resolution at a really slow speed. So I decided it might be better to just set the blank doodads...

OK, so I got pretty heavy into electronics, 3D fabrication, and more recently, the little kits like Arduino/Genuino and Raspberry/Banana/Orange Pi. I like DIY projects, and I especially like to "stick it to the man" whenever possible in the $$$$$ department. As most of you know, Laser...

Hi! I started doing some research to get really deep into electronics, formerly knowing almost nothing (solenoid piston motors are awesome!), and I tripped over something called Supercapacitors and Ultracapacitors. When i was working with lasers years ago, we used a lot of 3.7-ish batteries...

So had this idea recently - if you wanted to use a handheld laser up close to a surface to do things like etching free hand, the smoke from the burning surface would cloud up the lens and destroy it. That got me thinking the device wasn't very practical and there had to be a way to keep smoke...

Selective Laser Sintering Patent Expiration Will Not Be a Game Changer | Industry Market Trends So 3D printing is basically the next big thing; kind of like 'Today' is 1995-1996 and we are talking about the Internet is the next big thing. At least, that's what I think, simply because I'm...

Hi, it's been a while. Recently I've started getting into longer range shooting and was wondering what kinds of tactical laser builds (to be used as a rifle or pistol style laser sight) might be excellent for extreme ranges? And what's the farthest I can go with a domestic laser? I'm talking...

While I'm aware that green lasers like a Hercules hold their focus at a longer range and blue diverges quickly, I was wondering at what range do these blue lasers - the 1-2W 445's become relatively safe? additionally, I was wondering about whether it had more to do with diodes or the lens...

On the internet I see a handful of high powered short duration flashes of laser light in seemingly compact designs that others apparently call "pulsed". I've also seen tasers produce ludicrous amounts of voltage and effective stunning power in a hand held device that betrays my understanding of...

Tilting 'nanocups' double optical frequencies - physicsworld.com I think this technology could drastically improve our existing range of colors and the power we can get out of some of them.

Thorium lasers: The thoroughly plausible idea for nuclear cars | Txchnologist I didn't fully understand, or read the whole article, but it got me thinking about what lasers could do, and whether we could make a thorium laser (since I have no clue). It also had a nice picture of something that...

I've got one laser designed for mounting on a rifle or "BFG" pistol, and when I think about setting up a different colored laser - like violet or whatever, the first concern that occurs to me is the shock destroying it. I'm worried the soldering mounts will snap, the driver will crack, the lens...

So everyone is familiar with some kind of sound effects used for lasers or laser like devices. There's the sound of Star Trek phasers, the sound of Light saber feedback, the powering up of the Ghost buster proton Pack, and the classic "pew" sounds of most sci fi laser effects. I was wondering...

I've been wracking my brain over this one for about a week now, trying to understand current, voltage, and resistance, and I'm still quite confused, despite all the LPF threads I read on the subject. I understand current is amps, and voltage/resistance = current. I understand voltage to be...

so I was looking at some Sony diodes in the 4000mW range, and noticed they were thermoelectrically cooled. I'd never heard of such a thing (nothing new about that), and I began searching for a cylinder variant to see if it could be used in a host. I didn't see any cylinder versions, only flat...

Opnext blue laser diode for embedded device picoprojector applications - Laser Focus World I thought this was an interesting diode for people who are more interested in the color than in burning lasers. This one is 60mW, according to its maker, Opnext: But when I went to their website...

New picosecond pulsed diode lasers at 500 nm and 510 nm by PicoQuant I'm not sure if this has been mentioned yet, but in my quest for fancy new diodes, I tripped over this article, originally from July 15th and reprinted August 15th (3 days ago). edit: direct product source...

I've been looking into Laser lenses and I noticed with engraving lenses, they normally try to focus a smudge into a dot. I've also noticed the 445nm lasers produce a bar, rather than a dot. Is it possible to turn that bar into a dot, even it its only got a range of a couple of millimeters? I'm...

I've been thinking about the Sonicare toothbrush, ever since I got one years ago it has reminded me of some kind of laser device. Two things fascinated me about this tool, 1) it has a really nifty blinking LED charge indicator with bars; 2) it doesn't actually require physical contact to...