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Well, it was really fun, and I have some good memories, but I just don't use these things anymore. I'm not particularly active here either, so I'm selling my collection, hopefully with some reasonable prices. First up: 638nm HL63193MG @1.2A, S1 lens, 501B, 860mW SOLD This one is a blue 501B...

Hey everyone, I'm sorry that It's been so long since I've been on here. I've sort of lost interest in lasers for now, and I might start selling more of my lasers, but for now the only one I really want to just get rid of is my argon laser. I don't run it often enough so I want someone who can...

I understand that blue and yellow LED's mix together to make white, so does it stand to reason that a cyan wavelength and red wavelength combine to make white? I could see pass blue+green reflect red dichroic mirrors being used along with red and the newer cyan diodes to make relatively simple...

Hey guys, so I just fired up my argon for the first time since I got my LPM and decided to take a reading, and to my surpise the laser (a JDSU 2214-20SLMD) is only outputting 5mW according to my LPM, even though its rated for 20mW according to the model number. It fired up on the first ignition...

Hey guys, I just had a run in with a house centipede in the bathroom in my house (AKA "I NEARLY FUCKIN DIED!") and am looking for a bit of moral support. If you like these little shits that move fast, look creepy, climb walls, and bite, then dont bother replying XD the thing not only scared the...

Hi everyone, so as we all know, the company XPL lasers has gained a reputation on the forums now, for honest output powers, and offering the first handheld RG:yellow lasers for rather low price. However, the lasers use a 635nm multimode diode along with a 532nm DPSS green, meaning the beam types...

Hey everyone, i haven't been around for a while, and i haven't been as active as i think i should be, but i felt like stopping back and saying hi again. Also its been 1 year (and two days when this was written, i kinda forgot XD) since i joined this forum, and i never regretted it. Thank you to...

Sorry I didnt make this clear: the first and second options refer to being sick, not just the symptom, however the last three refer to the symptom specifically. The symptom I'm referring to is severe pain when swallowing. This may be accompanied by other symptoms but this seems to be the main...

Hey everyone, so i'm planning on a red green combined (yellow) handheld laser, and i have a few problems here: 1. electronics: i don't know much about electronics, i'm more into the optical side of lasers (i feel like i will definitely need to learn more about electronics soon though). the main...

So if i were to buy a high power 980nm laser diode, what crystal would be best to double the frequency to 490nm? What would i see in terms of efficiency? I saw a 5W C-mount laser diode at 980nm, and was thinking that if i got 5W out of it, i would be able to get at least 50mW of 490nm with the...

Good news everyone! The laser just arrived! I just tested it (1/2/2016) and it works great. the fan and controller have arrived, and here are your beampics!!! So here it is! it was built in 2000 by JDS uniphase, and rebuilt by the national laser company in 2009. Im VERY surprised by how...

So, i have seen before that by cooling red lasers with liquid nitrogen, you can achieve much shorter wavelengths (down to the 605-610nm region) however you need very, very low temps (like -200C) but what type of results could we get with one of the low power, 635nm single mode diodes (like the...

Hi, so, i felt like asking something crazy: would it be possible to build a free electron laser at home? i think this would be awesome... high power, in any region of the EM spectrum that you want, but how feasible would it be?

OK, so this is just a general CNI group buy now, so request anything from CNI you want (other than pens/portable lasers since they don't sell those to the US anymore) and when we order, the additional fees will be distributed over everyone. worst case scenario with 5 buyers is an additional $35...

As some of you may know (i doubt it, nobody has as many weird hobbies and interests as me) magnet spheres and toys such as buckyballs are being banned. all other companies that sold them are shutdown, except for one: Zen Magnets. zen magnets has been battling the CPSC over this stupid ban for...

Hi everyone. So I was recently contacted by an american manufacturing company that offers tungsten and molybdenum manufactured products, and they have no minimum order! So this got me thinking: a tungsten host would be sick. Imagine this: a host that will not scratch because it's material is...

would it be possible to fiber couple a laser diode by using optical glue to literally glue an optical fiber to the window of a laser diode? i believe it would be impossible for an open can diode, but i have no reason to believe this wont work for a canned diode, and proper alignment of the fibre...

Hi everybody! so this is my second "homemade" laser, after my red 501B laser. for this laser, i plan on getting a different host eventually becuase a 501B is a little boring when you have 2. the specs. diode: BDR-209 405nm 16x Bluray in copper module from DTR. driver: X-boost V7 V-boost mini...

Hi everybody! so i was in south dakota last month and while i was there i found this little flashlight in a store there, and for only $8.50 i figured i would get it to see if i could build a laser out of it, and it seems promising for a low power build. it holds one 14500/AA battery. here it...

so ive been looking forever but i haven't found much info on the S1 lenses other than they are better than G-2 lenses. so far, all the info i have is that they result in similar divergence to G-2, 5% more efficient than them as well, but i am not sure about either of these. so if anyone has...