
was limited only by the available pump power, and in fact it is anticipated that
the maximum CW output power for this fiber design will be around 2 kW [34].
LMA fibers have also had a dramatic impact on pulsed fiber laser technology
where pulse energies are now approaching 100 mJ with multimode beam quality
and around 4 mJ single mode [39]. High peak powers, in combination with the
short pulse durations (nanoseconds) and diffraction-limited beam quality, are
desired in many applications including marking, micromachining, and drilling
anything from fuel injectors through to turbine blades. Military applications
involve target designation and laser radar, ...