title: 110  W all-fiber picosecond master oscillator power amplifier based on large-core-diameter ytterbium-doped fiber.
abstract: We demonstrate an all-fiber picosecond fiber laser in a master oscillator power amplifier configuration. The seed source is a soliton-type passively mode-locked Yb-doped fiber laser by a semiconductor saturable absorber mirror and chirped fiber Bragg grating. The pulse width of the seed laser is 4.5 ps with a repetition rate of 15 MHz. A highly doped active fiber with a large core diameter (50 μm) is employed to boost the average power of the seed pulses to 117 W with 11 ps pulse width and 709 kW peak power. The corresponding output beam quality factor at maximum output power is 3.7. The all-fiber construction of the whole laser system enables compact size and robust operation.
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Yu
authors.forename: Wei
authors.initials: W
authors.lastname: Shi
authors.forename: Xinzheng
authors.initials: X
authors.lastname: Dong
authors.forename: Jinhui
authors.initials: J
authors.lastname: Li
authors.forename: Yizhu
authors.initials: Y
authors.lastname: Zhao
authors.forename: Huixian
authors.initials: H
authors.lastname: Liu