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Hey folks, lately i scored a 50W SMA fiber coupled laser on ebay the other day. The fiber is perfect on the one side, but smashed on the other, so i have to polish it. I have seen Marco Reps on youtube doing this, but he had a bare fiber end. My fiber is surrounded by a stainless steel...

Hi everyone, I got a few of these new Sharp diodes and decided to use one for a build. I had no fitting boost driver around, so I build one. It doesn't look that pretty, but it works perfectly. The input voltage can go down to 2.8V, so it works with a singe Li-Ion cell. Since I wanted the laser...

Hello everyone, I have bought a 473nm DPSS from E-Bay and was really happy to receive it today. After playing around a bit I was wondering why I did not get any delicious 473nm light. I noticed something rattling, so I opened it up. The following shocked me really hard. The pictures show what I...

Hello everyone, i just got a Blu-Ray burner i shot on ebay for 20 bucks. That's a pretty good deal I would guess. The drive was a LG BH16NS40 one. So LG says it is a 16x/8x type. What driving current and output power can i expect? I ran it already at about 4.7V and 100mA. How far can I go? Here...

Hello everyone, about a year ago I got two 405nm modules from ebay. One was used to pimp my 3D printer. The main purpose for this was to expose uv-sensitive PCBs with it and etch custom PCBs. Well, that works quite okay, I made some PCBs and was able to do some other cool stuff but that's a...

Hello everyone, there is a question I have and I hope somebody here can help me out. Does the wavelength of a laser diode depend on the current it is driven or on the temperature it heats up during high currents? If it would depend mostly on a high current it would be pretty neat, because I...

Hello, everybody here knows (or should) that laser diodes need a constant current driver to last some time. Often it is mentioned, that the driver should output a low noise Voltage too. I am thinking of building a laser but there are some questions I have about this ripple problem. The maximal...

Hello everyone. When I thought about getting a 589nm laser I was not sure about the output power. A nice bright 589nm has a truly beautiful beam (in my opinion) but is not really practical in daily use. I was thinking about getting a 5mW laser but got a 50mW because the price / power ratio. So...

Hello, I got a 589nm laser this month and was finaly able to do a LPM test. I build the LPM myself unsing a TLV314 OpAmp and a small, 6 x 6mm TEC. To calibrate the LPM I used my 1W Spartan. This did not work as planned because it seems that a 1W diode laser isn't necessary 1W (like I expected)...

Hello, I want to build a RGB laser somday. At the moment I am still planning and dreaming. A while ago I was doing some tests with multi mode red, multi mode blue and DPSS green lasers. This dit not work out at all because the beam of the DPSS was way thinner than the beam of the another two...

Hi everybody, today I got my 589nm laser. I saved the money quite a time ago for this laser, but I was thinking literally for years if I should get one or not. I mean the wavelength is awesome, but the're quite expensive, but the wavelength is really awesome, but they tend to be quite unstable...

Hello all together, I've got here some diodes laying around and thought it is a shame to let dust settle on them. One of them is a 1W 445nm diode I once got from DTR. This diode was used in this build. I have no fitting host here so I thought I'll just print myself one :D. I printed it out ouf...

Hi, do you have ever killed a laser and how? I am wondering because it is insane how powerful laser diodes are nowdays and with how much additional power they can survive. For example: I have seen quite some 1.5W 520nm builds with 1W diodes or how the NUBM07E 465nm diode gets punched to go up to...

Hello, does anybody know the thread type of Dragon Lasers Spartans battery cap?I want to add a tube and mod it to work with 18650 batteries.

Hello, I got a green (532nm) laser a few years ago. It was always working fine. It wasn't as stable as I whish it was but this wasn't a problem. Since a few days I registred a increased amount of instability. I figured out what the switch was really sensitive so even small amounts of movement...

Hello, does anybody know if the 589nm laseres which CNI produces (those which Dragonlasers calls "Spartan") use linear or switch mode laser drivers? I am asking because I'd like to modify one. Having a 589nm with visible beam must be awesome but sometimes I want to make it eye safe. For this...

Hello, I haven't submittet a post at LPF quite a long time. Mostly I am just browsing this forum. Now I got a question I cound not get answered. Since a long time I am dreaming of getting a 589nm laser. I would prefere a really portable one, so I am thinking about getting an Aurora 5mw from...

Hi all, 2 weeks ago i build my first (and last) coilgun. It was wa fun project. I just wanted to own such a thing, and it is pretty badass too. :evil:. Today i made the video and uploaded it on YT. I bet a laser would look pretty cool on it, but other projects are waiting ;). Well, lets give it...

Hey Folks, I've just made a Geigercounter. It's the first I build. Presently I'm reading the Metro 2033 books, so I think those inspired me ;). The tube is a SI39G (got it for 15€). Ther voltage of about 400V is created by a step up converter. It is possible to use ist between 300v and 600V...

Hi all. Yesteday here was a "light & laser show". This was the first real laser show I saw. I was really impressed :). I have took some photos and made a Video. The Video is quite short. After I was recording it continues for some minutes. There were a lot more fireworks later. So here are...