Title :
85-W Burst-Mode Pulse Fiber Amplifier Based on a Q-Switched Mode-Locked Laser With Output Energy 0.5 mJ per Burst Pulse
Author :
Haijuan Yu ; Jingyuan Zhang ; Yaoyao Qi ; Ling Zhang ; Shuzhen Zou ; Lei Wang ; XueChun Lin
Author_Institution :
Lab. of All-Solid-State Light Sources, Inst. of Semicond., Beijing, China
Abstract :
We report a compact 85-W burst-mode pulse fiber amplifier seeded by a Q-switched mode-locked laser at 1064 nm. At a repetition rate of 154 kHz, the pulse duration of the burst is 4 μs containing 280 of 20-ps pulses with temporal space of ~14 ns, and the total burst energy is about 552 μJ per pulse. The pulse number and the burst repetition frequency can be adjusted from 121 to 154 kHz through increasing the pump power of the seed laser. To the best of our knowledge, this is the first time to observe this type burst pulse amplifier based on the Q-switched mode-locked seed laser. No significant amplified spontaneous emission and stimulated Raman scattering were observed in our experiment when the output power is less than 85 W.
Keywords :
Q-switching; laser beams; laser mode locking; nonlinear optics; optical fibre amplifiers; stimulated Raman scattering; superradiance; Q-switched mode-locked seed laser; amplified spontaneous emission; burst pulse amplifier; burst pulse duration; burst repetition frequency; compact burst-mode pulse fiber amplifier; energy 0.5 mJ; energy 552 muJ; output energy; output power; power 85 W; pulse number; pump power; repetition rate; stimulated Raman scattering; temporal space; time 20 ps; time 4 mus; total burst energy; wavelength 1064 nm; Fiber lasers; Laser excitation; Laser mode locking; Optical fiber amplifiers; Power amplifiers; Power lasers; Pump lasers; Burst-mode laser; Q-switched mode locked laser; Yb-doped fiber laser; burst-mode laser; fiber amplifier;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2015.2397007
