Pulsed pumped Yb3+-doped double-cladding fiber amplifier

A pulsed pumped Yb3+-doped double-cladding fiber (DCF) amplifier is reported, Seeded by a passive mode-locked Yb3+-doped fiber laser, the fiber amplifier can generate 200 W peak-power and 120 ps duration pulses at 100 Hz repetition rate. Because of the pulsed pump approach, the amplified spontaneous emission (ASE) and the spurious lasing between pulses are well avoided.