I am in dire need of some information on pulsed lasers. I'm not quite sure if this is the correct forum for this kind of question but here goes. I would like to know if you can buy a commercial pulsed laser system that can deliver a repetition rate of 40Mhz and 20 fs pulse duration while being able to tune it to the signal from a storage ring? This is in relation to an experiment on Compton backscattering. What kind of average wattage would such a laser be able to deliver if it exists?