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Hey everyone! It's been a long time since I posted anything here. I started collecting lasers back in 2013. Recently got back into this hobby. I've always wanted a spectrometer. I finally saved up enough to justify pulling the trigger, and a week or so ago, I saw this gem on ebay. Ended up...

I was doing some spectrometer readings for my research samples and slipped in my laser... Did a quick test on my 808nm ebay pen (power output 220 mW, multimode bar-shaped output). I took the lens off, and directly allow the laser output into the spectrometer from a few feet away to let the...

So I was firing up my CO2 Laser again, and I accidentally connected the leads backwards. Realized my stupid mistake within 10 seconds, turned the PSU off and put the leads back on in the right direction. The laser seems to still run perfectly normally. I would assume this did some small amount...

Hello all, I'm looking for a beam expander for 532nm lasers that is >5X, preferably 10X. Please PM me an offer if you have one to sell. :) EDIT: The beam expander will need to have at least 5 mm diameter at the input.

Hello :) I finally got my Arcane 445nm back from Thejoker301 yesterday. Back in January/February, some of you may remember the thread I started about how the old diode died. (broken diode window) Joker provided outstanding customer service, and was extremely patient and understanding with me...

I was just browsing the United Nuclear site, and found that their PURE Uranium samples were back in stock. $49 for 3-4 grams. This link Personally, I've been waiting a long time to get my hands on a sample. I bet they'll only stay in stock for another week. I already ordered a sample. Can't...

Hello all, Today I received my Uniphase Cyonics 2201-40MLA from crazyspaz in the mail. Shipping was good, he shipped it out on Monday, and I got it today. Crazyspaz was extremely nice and quick to respond to all my questions. He even included, for free, a diffraction grating, saving me from...

Hello. :) So I bought an Arcane build (9mm 445nm diode, driven at 2.35A) from TheJoker301. Everything went well, and Joker was extremely courteous and fast at replying to my messages. :) I received the laser in the mail today. However, the first time I turned it on, I noticed that the dot was...

Hello guys, I'm selling a 680mW 445 nm laser. This laser uses an A series diode, I believe an A130, has about 5 hours of runtime on it, and has a duty cycle of 3 minutes on, 1 minute off. The power is very steady at 680mW and gradually drops to about 650mW at 3 minutes, but I wouldn't recommend...

I was just watching a documentary, and guess what: they used a 10,000 Watt (10 kW) 808nm IR laser to test the concept of space elevators! :drool: The laser is introduced at approximately 28:50, and is fired and demonstrated at 30:09. Here is the documentary: That is one powerful laser!

Today I was out in the yard, testing my new AW 16340 batteries I got from lighthound.com with my 1.9W 445 laser, and I found an old ping pong ball. I put it under the beam, and there was a lot of smoke, and then it burst on fire! Man that thing was an inferno, the ball was spinning rapidly and...

This is my very first build. I used the prototyping board on my radioshack electronics learning lab to build the driver :) It is a LM317T based driver, at 366mA. I got the hexagon heatsink from Jayrob, and the diode, module, and lens from DTR's shop. The big block of metal you see is heatsinking...

I was just thinking, is it possible for anyone to make an extension tube for the ultrafire WF-501B host to fit 2 18650 batteries? Currently it's possible for 2 16340s or 2 18350s, but I want longer battery life :yh:

Hello guys, I recently purchased a blue laser in Taiwan, but I do not know the brand and the model of it. I have some pictures attached. Please help identify it, I believe it looks like a Lazerer product.

Hey guys, I'm new to the forum. I'm from California, and one of my most favorite things to do is explore optics and have fun with lasers. Of course I have the safety goggles and I know the precautions :D