Investigation on the temporal characteristics of the pumps in high peak power pulse-pumped Yb-doped fiber amplifiers

This paper analyses the characteristics of the high peak power pulse laser amplification in a Yb-doped double-clad fiber amplifiers (YDFA-DC) pumped by pulse LD. The pump duration, the pump power and the delay time between the pump and the laser seed are discussed in detail, which are the most important parameters when such a fiber amplifier stage is designed.