Why are few researchers using fiber lasers in Laser-induced breakdown spectroscopy(LIBS)? Because of the characteristic of pulsed fiber laser, such as high repetition frequency, low pulse energy?
Common laser parameters for LIBS are: pulse energy of several hundreds mJ, pulse length of 10 ns. Repetition rate is not determinative factor.
So if one plans to use 10-30 nanosecond fiber laser as radiation source for LIBS (generally of 1 mJ or less per pulse), he would also connect solid-state amplifier in series to fit pulse energy demands.