PLD technique relies on laser with high peak power to ablate various targets. Mostly nanosecond pulsed lasers (UV) are integrated commercially. Why not they use picosecond or femtosecond laser which could deliver high peak power and less thermal effect?
Nanosecond laser can ablate almost all the targets and one can also get a decent deposition rate of materials using ns laser. These are the two main parameters required for a PLD setup.
So you don't need a ps or fs laser to ablate targets in PLD technique. So using ps or fs lasers in commercially available PLD system will increase the overall cost of the system. Until and unless you have some specially designed experiments which requires these ultrafast lasers in PLD system other then that I think ns laser can do the job.
I am agree with Dr. Hamza, its a matter of cost/benefit rate. The nanosecond lasers can do the work. Specifically the UV nanosecond lasers maybe are the best choice.
The species ablated from a target by ultrashort laser pulses are more energetic, therefore better adhesion might be achieved. For biological samples, compared to ns laser, less heating from ps/fs is probably highly desirable.
High repetition rate high power (up to some 100W) ps lasers are readily available on the market these days, which may become a game changer in the near future.
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