Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

I forget the details, but as I recall it was around 5 watts continuous. The laser was Q-switched and produced much higher peak power pulses, depending on the repetition rate selected. Usually I ran between 40 kHz and 200 kHz. The cutting speed, repetition rate, and spot size had to be considered or it would produce a "dotted line" rather than a clean continuous line of course.
The system was designed to cut thin (about 1 um) metallic layers deposited on a Kapton substrate. It was capable of removing the metal without cutting the Kapton since the laser energy was transmitted by the Kapton.
The end product was a PV solar panel using CIGS (copper-indium-gallium-selenide), but that is a whole different topic from what this fourm is about.
 






[Non-text portions of this message have been removed]