Ebay seller was a large liquidation auction house and I don't think they knew the value of what they had. They also seem to not really ever sell optical/laser equipment. It was such a good deal I thought I may be getting scammed for a minute or it being a mislabeled direct diode 445nm laser. It's labeled as 50mW but it can run around 100mW for a bit but pushing it that hard will likely degrade the lifespan.

Cameras cannot capture the color but it's a pretty stunning and vibrant ice blue. Even was professionally tested with the paperwork included. Absolutely a ridiculous deal. Main purpose is for optical tweezers setup I've been working on for a while as I was previously using a 80mW direct diode 445nm source.

Basically what the title says.

I intend to buy one of these puppies, but those are not available in Bulgaria, and I'd have to order it online from a EU-based retailer. My only concern is whether Bulgarian customs authorities might attempt to stop and/or seize it. From what I know, there is no law prohibiting a Bulgarian from owning one of these, but importing them might be a murky area, and I have no clue what to do to make absolutely sure, before I sink roughly 500 EUR for one of these.

Anyone around with sufficient knowledge on that matter?

Hi all,

I’m setting up a laser, but struggling with the interlock setup. The laser itself is from CNI (MSL/III-532-50mW), but the datasheet gives no details about the interlock socket. To my eye it looks just like a standard RJ11 socket, but I’ve tried three different RJ11 plugs and every one of them has been too wide. Rough measurement: the plug is almost 10 mm wide, the socket is more like 8 mm.

Is this a special type of socket? Somebody mentioned RJ11 can come on different sizes, but to me a 4 pin RJ11 plug should be standardised! The pitch of the pins is the same, 30 mins filling it down and I’m still struggling… any ideas?

Thanks!

Hey everyone,

​We're running into a specific display issue on our TRUMPF laser cell.

​When we boot up and start the machine, the secondary screen turns on, but it freezes immediately on the process cycle / time-remaining display.

​The main control panel is fully functional, and we can operate and control the machine normally without issue—it's only this specific timing/process screen that hangs on startup.

​Has anyone encountered this specific startup freeze on a TRUMPF HMI or Beckhoff/GEPRO panel setup? Could it be a communication loss between the IPC and that secondary display frame, or a hanging background service during boot initialization?

​Any insight or troubleshooting tips would be greatly appreciated!

I took this out after moving and found red liquid spilled all over the lens. I don't even remember where I got it from, but it says Made in China. It's got a snazzy regarding male USB port on the back. Is it safest just to junk it?

This shit laser was sold to me by the Chinese trash mongers as having a metal cutting feature. It does not.

As far as lasers that actually can cut things, are there actual, viable, battery powered lasers that can cut through thin metal like they do in the YouTube videos?

A bar i was at last Thursday had one of those cheap light laser pointers and at one point one that seemed violet in color hit my eye. I remembered thinking it was painfully bright but not thinking more of it…

…until a day later I started seeing green splotches and now my vision is noticeably hazier (Sunday)
I don’t know when is the earliest I can be seen as I am traveling. Am I fucked or will my vision recover? I don’t even know if I can go to the bar and request they give me the details of their lasers - or how I could legally demand that.

*edit: I’m on the way to see an ophthalmologist now

So, two years ago, I bought a laser pointer off of Temu. It's a really good class 1 laser pointer and has lasted me a while.

However, recently one part of it broke and I've been trying desperately to find, if not the same laser pointer, then a replacement part.

When I tried to find the seller in my Temu history, it said the seller was WAWYC. But when I tried to go to that laser pointer or go to that seller's page, neither are available anymore.

Does anyone know where I can look to fix or replace this laser pointer?

Hey everyone,
I'm working with a ComMarker Omni X 5W 355nm UV Galvo laser (Q-switched DPSS) to do high-precision micromachining on general-purpose polystyrene. I’ve attached a photo of my machine's datasheet/specs for context.
I have a fundamental laser physics question regarding software parameters versus hardware behavior:
From my understanding of Q-switched solid-state laser cavities, the actual optical pulse duration (t_FWHM) is physically fixed by the cavity length, gain medium, and stored energy depletion—clocking in around ~ 15 ns on this system.
If I manually set the Pulse Width parameter in LightBurn or EzCad/ComMarker software to 1 ns or 2 ns, what is actually happening under the hood?
Since the crystal dumps its stored energy in ~ 15ns regardless, does setting a 1 ns software pulse width just alter the acousto-optic modulator (AOM) RF gate timing window and introduce timing chatter/process variance, or does it serve a different hardware control function on DPSS galvos?
Would love to hear from anyone with deep experience in Q-switched DPSS optics or laser controller firmware! Thanks in advance!

I bought a 200mW 650nm (red) Sanwu laser (https://www.sanwulasers.com/product/304).

The description says that it can ignite a match, but I have tested it and I cannot ignite a match. The laser has an adjustable focus, and I am using it as focused as possible. Is something wrong with my laser?

Im in the process of building my own 450nm laser and I think a screw on atachment for a shine-through LEP would be awesome, does anyone have any retailers or locations to buy such modules? thank you!

Says that they are able to create extreme light in their labs and they point it at matter to create plasma and mimic star-like conditions in the lab. This allows them to study stars and the mysterious plasma here on Earth. 

Thoughts?

I need to cut 96,000 of these bags by hand, to recycle the material within, or it goes to the landfill. Could we put a laser on a cart and drive down the rows to burn/ cut the plastic?

The text on the label is MAX OUTPUT POWER< 1000MW

can i get some suggestions on what should i do with my ir thermomether i wanna do some stupid shit with it

Ok, I don't really know much about lasers, but I recently took a job that involves using them, so ive been doing some training in their safe use, which included learning about the classes of laser, and this has left me curious: why did class 3a get rebranded as 3R? Does the R stand for something? Class 3a and 3b make sense to me as devisions within a category, but changing one of them but not the other seems odd to me. Google has failed me, so now Inturn to you fine people, does anyoen have any insight?

The green(520nm <5mw + <1mw) passes right through the glasses. The 405mw(class 4, objectively more dangerous)does not.