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Not sure if this has been posted before, according to a quick search it hasn't... Just discovered these magical little devices called liquid lenses. They have the ability to vary their focal length continously over a given range. The focal length is adjusted by changing the driving voltage into...

I'm pretty sure this is the right section to be posting this... I've been meaning to build a TEA nitrogen laser for a while now, only just got round to it. My setup: I have a 2mm thick piece of glass thats roughly 35cm by 25cm from an old scanner seperating 2 pieces of alaminium foil aprox 30cm...

Just after setting up my co2 laser (Its normally sitting in the box it came in) I did a quick test on the coolant system, I turned on the water pump and sure enough water started to flow through the tube. Everything was fine, for about 5 seconds... The hose connecting to the tube at the output...

After having far too much fun with my 445 about 6 months ago i was greeted with a brief flash of white light and then nothing. I'll assume my driver went short circuit and let all the current from my 7.4v lithium-polymer battery into my diode... Heres the host (before it died): Today i...

After seeing the price of an average 40w CO2 laser power supply i decided i could probably make my own for much less. Took about a week of messing around with components, a day of putting it in a box and about a month of getting round to actually doing it ;) It runs from about 24VDC at 12 to...

Hi all, Im new here, ive been lurking around for quite a while (about a year or so i think) but never really felt the need to make a thread up until now. I've handled a few fairly high power DPSS greens, made countless numbers of dvd writer sourced 200-300mw red lasers and recently made my...