can't I just get a tube with two mirrors on the ends and one has a little whole in it, then I send electricity through the air in the tube to excite the atoms and cause light to bounce back and forth exciting more and more?
Glue foil to two pieces of glass and set the edges a small distance apartConnect a spark coil to the foil electrodes at a calculated position where the circle of charge will advance along the edges near the speed of lightBuild a plastic tunnel over the edges and fill it with a gasTrigger the sparkThis produces a very short pulse of laser light of a color determined by the gasWhat you do with it is up to youI think you will need a teacher to guide you and provide the equipment.
