Search results

To celebrate having made an account here exactly 10 years ago today, I’m going to do a review of a recently acquired tunable Melles Griot 532 Argon-Ion. Operating principal: The core of the laser is the same as any other external mirror argon, the main difference is the HR has a tuning prism...

I am doing a laser project where I could use the framing/hardware from a long HeNe laser like the Spectra Physics 127, or equivalent SP-107 and SP-907. So if anyone has a nonworking SP-127 that they don't want, let me know as I could use it.

I just finished fixing one of my 475nm diode laser pens I built a few years ago. The internal battery contact spring broke, but in rebuilding it I ran into the issue of not being sure what the laser modules/diodes polarity was. Luckily I was able to determine it and fix it successfully, but I...

Happy 60th anniversary Everybody! The first working LASER was first made by Theodore Maiman on May, 16th 1960. Today is also the International day of light. Link: A History of the Laser: 1960 - 2019 I also decided to have some fun and make a "cake". Turned out better than I expected, ;)

At SELEM I bought this 1987 YAG laser from Alex. I don't think he tested it at all, so really nothing was known about it. It has hose connectors for water cooling and indicates that it should not be run without water flowing. One place selling an almost identical laser lists it as 600mW @...

So I've though about building a laser projector for some time now, but I never got around to it. Plus it was slightly daunting to me with the various choices of DAC, Software and hardware. Well, for my college course I need to build a project, so I decided to get a two for one and get a laser...

Firstly, this is not spam :D! I was doing some research for one of my projects and came on the information that the photonics society SPIE has a free membership for pre-college students. https://spie.org/membership/student-members For any young person here this would be a good way to...

It has been know by many for some time that some 532nm DPSS lasers produce multiple discrete green wavelengths. Because the information about this is sparse and spread out, this thread will hopefully serve as one place to compile some of the information etc. The transitions responsible for the...

So here is my collection. (Pardon some of the missing pictures due to the photobucket debacle) I'm primarily posting this out here to keep track of my build threads etc. I also want to organize all my links in one common thread in the case that anyone wants to look at something I built. I will...

So I was thinking that it would be nice to have a regulator like the LM317 and AMS1117 that are simple to use but that has a lower reference voltage and an equal or better voltage dropout. After looking around the closest regulator I could find was the MCP1826T-ADJ. It does come in a SOT-223...

So I bought Alex's (Mariomaster) Melles Griot 643 Ar/Kr laser at SELEM and, being the extra cautious person that I am, have a few questions that I would like answered before I fire it up. Alex is evidently too busy to check his PM's, so I'll ask it here. -For a 220V connection, the PSU's wires...

My Cyonics Uniphase 2214-40MLA Argon Laser arrived yesterday! Since this is my first argon ion laser I am looking for information of how to get it up and running. I noticed that there wasn't a whole lot of information specifically on the Cyonics Uniphase lasers, so I thought that I might just...

I just posted my review of this flashlight here, and I also wanted to show how I modified it. So I started by taking the aluminum reflector out to find this: So to augment the heatsinking I took a heatsink from a Phat light-54 and cut the fins off, drilled holes and cut off the corners. I...

I'm going off to college! This fall I'll be going to college to get an associates degree in "Photonics and Laser Technology". So I probably will be too busy to post much:wave: So :thanks: everyone for contributing to this forum which grew my interest in lasers and now is leading to this. I...

December, 28, 2014 I contacted Gearbest representative May about reviewing the SkyRay 4000LM 5 x Cree XM-L2 (Sky - Ray 4000LM 5 x Cree XM - L2 LED 3 - Mode Highlight Flashlight (4 x 18650 Battery) and Free Shipping) for Gearbest. After a little talk she passed me along to Kathy and some time...

I have a "working" flyback driver and I can get up to 2 inch sparks using a laptop charger that gives 16V @ 4.5A, the problem is that the laptop charger that I'm using for power keep dying:(. The first died and only gave 7.4V after and the second one showed no voltage after it died. Here is a...

I am looking for a C8 flashlight "host" that is like the one on the left in this video, with bare aluminum around the reflector? (thanks to SixTee9 for the video) I've already bought three C8 flashlights but none of them fit it correctly.:( The dimensions of the heatsink that it needs to fit...

A while ago I finished building my Mits (ML501P73) 500mw diode into a Krypton Groove host. After a few revisions and dead drivers it was completed.:wave: Special thanks to Jufran88 for his posts about the amc3117 drivers and polarity. (Here) While there is nothing fantastically exceptional...

The purpose of this thread will be to show how I made this, and to hopefully give someone some ideas, and of course in the replies I can get some good ideas also:D It started when I read this thread and decided I wanted to use the diode in a laser pen. I had previously built a 635nm 5mW...

This thread is to discuss what was mentioned in this thread: PERMANENT THREAD: Ebay & other internet FINDS of interest. without derailing a thread. To summarize: I sent a message to the seller who reply said (slightly modified): I didn't respond yet because I'm not quit sure what to say. Is...