holomaker wrote:Super job Tommy ! Is this in Burst mode ? or is it amplifyed with an additonal ruby? Thanks for the link to your pictures as well!
The laser has a 4 inch rod in the oscillator, and an 8 inch amplifier. Its qswitched with a pockel cell. I rebuilt the control electronics, but not the power electronics. My qswitch driver unfortunately can't do double-pulse, nor even end a single pulse. So the laser free-runs after the qswitched pulse. The optics are also pretty much as originally manufactured. I did reduce the size of the axial mode selection aperture, when I thought it was tem01, but I want to try it again with the original one, and get some gain volume back.
http://www.bobdbob.com/~tjohnson/lab/20 ... 87.JPG.jpg
If you look at that image... From the lower right corner going left, alignment laser (hanging off the end of the rail), high reflector, pockel cell (shiny metal cylinder), etlon (white cylinder), polarizer (sticking out of the rod assembly), rod (under black cover, with white octagons taped to it (they are alignment disks)), mode selection aperture (on rod assembly), output coupler (white cylinder). On the far left, two turning mirrors (with alignment lasers behind them). Then along the top (left to right) spatial filter lens, spatial filter pinhole, amplifier (black box with more alignment disks taped to it).
The AA batteries power the alignment lasers. The lower right one is for doing the oscillator, the upper left one can make it through the amplifier and align down-stream optics. The lower left one was intended to do the oscillator, but didn't work very well and then I fried it...
