Title :
High-Peak Power, All-Fiber Passively Q-Switched Laser Using a Sm-Doped Fiber Saturable Absorber
Author :
Man Hu ; Bing He ; Houkang Liu ; Yifeng Yang ; Ye Zheng ; Xiaolong Chen ; Lei Zhang ; Jun Zhou
Author_Institution :
Shanghai Key Lab. of All Solid-State Laser & Appl. Tech., Shanghai Inst. of Opt. & Fine Mech., Shanghai, China
Abstract :
An all-fiber passively Q-switched Yb-doped fiber laser with fiber saturable absorber (SA) based on a piece of Sm-doped fiber is presented. For the first time, we observe the fast stimulated Brillouin scattering Q-switched process in an Yb/Sm all-fiber laser and obtain 41 ns pulses and 1.7 kW maximum peak power. Compared with the reported traditional SA Q-switched process, the pulse energy and peak power are both improved an order of magnitude. Furthermore, a traditional SA Q-switched process with 450 ns pulsewidth and 7.5 W peak power is also obtained in the same structure by increasing the feedback of cavity´s output end.
Keywords :
Q-switching; fibre lasers; laser beams; laser cavity resonators; laser feedback; optical saturable absorption; samarium; stimulated Brillouin scattering; ytterbium; Sm-doped fiber saturable absorber; Yb/Sm all-fiber laser; all-fiber passively Q-switched Yb-doped fiber laser; cavity output end feedback; fast stimulated Brillouin scattering Q-switched process; high-peak power laser; maximum peak power; order of magnitude; power 1.7 kW; power 7.5 W; pulse energy; time 41 ns; time 450 ns; traditional SA Q-switched process; Fiber lasers; Laser modes; Optical fibers; Power lasers; Pump lasers; Scattering; Brillouin scattering; Q-switched lasers; fiber lasers; fiber nonlinear optics; lasers; optical pulses; optical saturation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2329013
