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

Volume

32

Issue

14

fYear

2014

fDate

July15, 1 2014

Firstpage

2510

Lastpage

2515

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;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2329013

Filename

6826470