title: 157 W all-fiber high-power picosecond laser.
abstract: An all-fiber high-power picosecond laser is constructed in a master oscillator power amplifier configuration. The self-constructed fiber laser seed is passively mode locked by a semiconductor saturable absorber mirror. Average output power of 157 W is obtained after three stages of amplification at a fundamental repetition rate of 60 MHz. A short length of ytterbium double-clad fiber with a high doping level is used to suppress nonlinear effects. However, a stimulated Raman scattering (SRS) effect occurs owing to the 78 kW high peak power. A self-made all-fiber repetition rate increasing system is used to octuple the repetition rate and decrease the high peak power. Average output power of 156.6 W is obtained without SRS under the same pump power at a 480 MHz repetition rate with 0.6 nm line width.
authors.affiliation: College of Optoelectronic Science and Engineering, National University of Defense Technology, Chang Sha, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Song
authors.forename: Jing
authors.initials: J
authors.lastname: Hou
authors.forename: Shengping
authors.initials: S
authors.lastname: Chen
authors.forename: Weiqiang
authors.initials: W
authors.lastname: Yang
authors.forename: Qisheng
authors.initials: Q
authors.lastname: Lu
mesh_terms: D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D054023:Lasers, Semiconductor; D055100:Optical Fibers; D013057:Spectrum Analysis; D013059:Spectrum Analysis, Raman; D015018:Ytterbium
chemical_list: D015018:Ytterbium