title: Millijoule-level Yb-doped photonic crystal fiber laser passively Q-switched with AlGaInAs quantum wells.
abstract: We report on a millijoule-level Yb-doped photonic crystal fiber (PCF) laser passively Q-switched with AlGaInAs quantum wells (QWs). Three types of AlGaInAs devices with different QW numbers are fabricated to investigate the performance. With 50 groups of three AlGaInAs QWs as a saturable absorber (SA), the PCF laser generates an average power of 7.1 W with a pulse repetition rate of 6.5 kHz at a pump power of 16 W, corresponding to the pulse energy of 1.1 mJ. The maximum peak power is up to 110 kW.
authors.affiliation: Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: W Z
authors.initials: WZ
authors.lastname: Zhuang
authors.forename: W C
authors.initials: WC
authors.lastname: Huang
authors.forename: P Y
authors.initials: PY
authors.lastname: Chiang
authors.forename: K W
authors.initials: KW
authors.lastname: Su
authors.forename: K F
authors.initials: KF
authors.lastname: Huang
authors.forename: Y F
authors.initials: YF
authors.lastname: Chen
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D017785:Photons; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D015018:Ytterbium