APOLLO Laser Insides
The laser consits of a cavity (at top) and an amplifier (at bottom). Each has a Nd:YAG rod and flashlamp assembly, seen as the gray boxes fed by large power cables. To the left of the cavity flashlamp box is the shielded Marx bank, which is responsible for dumping the pulse out of the cavity when it has built up enough energy. Water hoses come in from the left and circulate coolant through the flashlamp housings to maintain a constant temperature profile in the rods.