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I have a Coherent FAP housed in the full module with monitoring and TEC. The FAP is in pretty bad shape (emits 3W @ 30A). I have another FAP I want to swap in and reuse the TEC. I've removed most of the module but the FAP is bonded to the heat spreader with a thin sheet of indium foil and I...

Ok, so for the last couple of years I've been working on building a portable DPSS laser. It's a Z-fold cavity design powered by two 40W FAP modules. All electronics are battery operated by an integrated LiPo pack. At full tilt there is enough battery to run it for about 30 minutes. It's portable...

I've been working on a DPSS laser for a while now. My goal is a frequency doubled Z-fold pumped by two 40w FAPs. I've done a ton of work on this, from designing my own power supplies and TEC controllers, to modeling the cavity via software to ensure stability and a decent beam waist in both the...

First, the good news: I successfully designed a dual constant current power supply to drive two FAP800s for this laser head. It is small and can run off a LiPo RC car battery. It can deliver 50A to each FAP and can be controlled by a microprocessor: I was able to easily take the two FAP800's...

Several years ago I built an LPM based on an Ophir head, voltmeter, and DC-DC converter (original post). Since that time I've found the need for something new: Powers are getting higher, and my Ophir head maxes out at about 10 watts. Need a new head for dual-diode designs. Really large case...

I've wanted to build a high powered DPSS green for a long time and won an eBay auction for a used Spectra Physics ZLM laser head. This head can do about 10W of 1064 and my intent is to convert it to green, or failing that strip it for crystals and optics and build my own. But first, I have to...

A while ago I built a battery powered lab laser (Battery Powered Labby). It was a fun project but beam quality wasn't that good and I there were some changes I wanted to make to the control electronics. Meet Labby 2: Changes from Labby 1: Extra 2X cylindrical lens mounted back to back with...

I wanted to see if I could make something with two NUBM44 diodes beam combined and corrected for a better beam profile and decided on a lab format to give me space for optics. I also battery powered it from a large RC car LiPo, so it's portable. I partially succeeded. The NUBM44 is really a...

Hi -- I'm building a labby using a BlackBuck 8 driver and the new NUBM47 diodes from DTR. I want to control the power output and I'm experimenting with both an analog control voltage on the BlackBuck and using PWM from an Arduino. Using PWM would give me a lot more flexibility, but when the...

I wanted to dust off my engineering skills and build my own LPM. Something simple with a pre-calibrated Ophir head and voltmeter. So really, all I built was a power supply. The supply runs off a single 9v battery. That is fed to a 7805 to provide stable power to the volt meter and to a DC-DC...

After lurking and reading for quite some time I finally got around to my first build. I'm using a 9mm diode from DTR and a 2.1a x-drive coupled to a host from Survival Laser with two 3.7v LiPo batteries. Everything here is "off the shelf" as I don't have a machine shop handy. The result is...

I've been lurking on this forum for a while now and thought it time to come out of the shadows. I've always had a fascination with lasers. In high school I tried to build my own argon laser from scratch (even the tube). It glowed purple for a brief few seconds, but that's it. I own a 5mw...