High-power erbium-doped pulsed fiber laser for nonablative fractional photo-rejuvenation

We present a high-power erbium-doped all-fiber source that generates rectangular-shaped pulses with durations ranging from 200$\mu$s to 5 ms and pulse energies up to 130 mJ.The laser has a stable single-mode output, a compact size and was designed for fractional photorejuvenation procedures.